US2732228A

US2732228A - Syphon elbow assembly

Info

Publication number: US2732228A
Authority: US
Priority date: 1953-07-06
Publication date: 1956-01-24
Anticipated expiration: 1973-01-24
Also published as: CH324810A; GB752565A; FR1092131A

Description

Jan. 24, 1956 A. E. ARMSTRONG SYFHON ELBOW ASSEMBLY Filed July 6, 1953 INVENTOR ADAM E ARMSTRONG ATT( )RNEY United States Patent SYPHON ELBOW ASSEMBLY Adam E. Armstrong, Three Rivers, Mich., assignor to The Johnson Corporation, Three Rivers, Mich., a corporation of Michigan Application July 6, 1953, Serial No. 366,353

1 Claim. (Cl. 285-110) This invention relates to improvements in syphon elbows and in particular to syphon elbows as employed in connection with paper driers in which the syphon elbow has to be inserted through a journal opening on a drying cylinder.

Syphon elbows are known which involve a pair of pivotally connected body parts carrying pipe sections which can be passed through a cylinder journal opening in straight line arrangement and in which the pipe section which is introduced into the cylinder falls to the syphoning position within the drum when the elbow joint, which forms the pivotal connection of the two pipe sections passes beyond the inner end of the journal opening.

It is an object of the invention to provide an improved elbow syphon of this known type in which provision is made for bringing the inserted pipe section to rest in an inclined position when it falls to its operative position and in which the opposed ends of the two pipe sections are firmly seated with respect to one another when positioned.

it is a further object of the invention to provide an elbow syphon of the above type in which the weight of the pipe section holding the elbow bent also holds this section sealed against a seat on the other pipe section which is angularly disposed with respect to the axis of rotation of a cylinder, such as a paper drying cylinder, upon which the syphon is installed.

The above and further objects and advantages of the invention, residing in the construction, arrangement and combination of parts will appear clear from consideration of the following detail description of one practical form of the invention, with reference to the accompanying drawings, and from the appended claim.

In the drawings:

Fig. 1 is a longitudinal section through an elbow syphon according to the invention with the body parts shown in full lines in straight line assembly for insertion into a drier or like drum and the left-hand body part being shown dotted in the position to which it falls and sealingly seats with respect to the other body part when the elbow is bent into operative position,

Fig. 2 is an underneath plan view of Fig. 1,

Fig. 3 is an end view looking on the left-hand end of Fig. 1.

Referring to the drawings, the syphon elbow illustrated therein comprises two hollow body parts and 12 each having an interiorly screw-threaded

bore

10, 12'. for the attachment of pipe sections 14 and 16. These body parts are pivotally interconnected at 18, with the pivotal connection being conveniently efiected by a pivot pin secured in aligned holes in spaced apart arms of a fork on the body part 10 and a single arm 22 on the other body part 12, this arm 22 being centrally located within the said fork and extending centrally from an inclined and substantially semi-circular surface 24 on its body part 12.

The surface 24 is conveniently inclined at an angle of 30 degrees to the longitudinal axis of its body 12 and has a circular hole 26 formed therein, which hole may be fitted with a hardened sleeve 28 presenting a tapered end 36 which projects beyond the surface 24.

The body part 10 has an end opening 32 eccentric to the bore 10 and arranged to seat upon the surface 30 when the part 10 is allowed to fall to its inclined position as seen in Fig. 1.

To install the joint the body parts are passed in axial alignment along the journal opening (not shown) on a drying cylinder or the like and will remain thus until the pivot 18 leaves the journal upon entry of the part 10 within the cylinder. Then the part 10 is no longer supported and will drop by gravity to the inclined position with attendant firm seating of the opening 32 over the tapered seat 30 to form a leak-proof joint.

Having thus disclosed my invention what I claim as novel and wish to secure by Letters Patent is as follows:

A syphon elbow assembly comprising a pair of hollow cylindrical body parts of the same diameter having passageways therethrough and having coaxially recessed portions at opposite ends thereof for the connection of pipe sections coaxially thereto, said body parts having pivotal interconnecting means permitting said body parts to be swung into axial alignment with their outer contours defining a common cylindrical contour, said pivotal interconnecting means lying wholly Within said common cylindrical contour, one of said body parts having a first end face adjacent the other-of said body parts, said first end face having a first opening therein of a diameter at least as great as the inside diameter of a said pipe section and communicating with the hollow interior of said one body part, said first end face extending from said pivotal interconnecting means away from said other body part and lying wholly within said common cylindrical contour when said body parts are axially aligned, said other body part having a second end face adjacent said one body part, said second end face having a second opening therein of a diameter at least as great as the inside diameter of a said pipe section and communicating with the hollow interior and axially offset from the axis of said other body part, said pivotal interconnecting means being connected to said second end face adjacent one side thereof and said second opening being disposed adjacent the other side thereof so that said pivotal connecting means and said second opening are disposed adjacent opposite sides of said second end face, and sealing means disposed about one of said openings and projecting beyond its associated end face so that when said body parts are swung together said openings will be brought into registry and said sealing means will complete a closed fluid passageway through both said body parts.

References Cited in the file of this patent UNITED STATES PATENTS 857,519 Foster June 18, 1907 1,483,455 Kraftv Feb. 12, 1924 2,000,087 Meeker et a1 May 7, 1935