US2728272A

US2728272A - Inlet for paper machine

Info

Publication number: US2728272A
Application number: US444233A
Authority: US
Inventors: Willis O Hisey
Original assignee: Sandy Hill Iron and Brass Works
Current assignee: Sandy Hill Iron and Brass Works
Priority date: 1954-07-19
Filing date: 1954-07-19
Publication date: 1955-12-27
Anticipated expiration: 1972-12-27

Description

Dec. 27, 1955 w, o s Y INLET FOR PAPER MACHINE Filed July 19, 1954 INV TOR. Bwf w i d State p INLET FOR PAPER MACHINE Willis 0. Hisey, Glens Falls, N. Y., assignor to The Sandy Hill Iron & Brass Works, Hudson Falls, N. Y., a corporation of New York Application July 19, 1954, Serial No. 444,233

3 Claims. (Cl. 9244) This invention relates to inlet structures for paper making machine and is directed more particularly to stock inlet for Fourdrinier machine.

The principal objects of the invention are the provision of an inlet wherein pressure therewithin maybe controlled, a slice lip is adjustable and recirculation when desired is accomplished.

The construction is such that various parts .are readily and easily adjusted within fine increments all to the end that stock is delivered to the wire in the desired condi-,

tion for the efficient sheet formation.

All of the above objects I accomplish by means of such structure and relative arrangements of parts thereof, as will fully appear by a perusal of the description below and by various specific features which will be hereinafter set forth.

To the above cited and other ends and with the foregoing and various other novel features and advantages and other objects of my invention as will become more readily apparent as the description proceeds, my inven-, tion consists in certain novel features of construction i and in the combination and arrangement of parts as will be hereinafter more particularly pointed out in the claims hereunto annexed and more fully described and referred to in connection with the accompanying drawings where in:

Figs. 1 and 2 are more or less diagrammatic side and partial front elevational views of an inlet embodying the novel features of the invention; and

Fig. 3 is a cross sectional view of one form of recirculation means.

Referring now to the drawings more in detail, the invention will be fully described.

One side wall is represented by 2. There are two such walls vertically disposed and spaced apart transversely the desired distance and held by one or more transverse members 4 secured at opposite ends thereto.

Stub shafts such as 6 are journalled in the walls 2 and have gear segments 8 fixed thereto. Reaches such as 10 are fixed at outer ends to the segments 8 and an elon-' gated former 12 extending transversely between the walls 2 has opposite ends secured to the reaches 10. In this way, the former is supported by the segments.

The former 12 has a longitudinal curved lower or inner face or surface 14.

A shaft 16 is journalled in bearings 18 fixed to the frame and has pinions, not shown, fixed thereto and in mesh with the segments 8. The shaft 16 may be rotated by any means, such as crank 20, for rotating the segments 8 and thereby the former 12.

Upper and lower plates 22 and 24 extend transversely v of the walls 2. Said plates have portions 22' and 24 spaced to provide a stock entrance 26. The upper plate 22 extends upwardly and curving from the entrance and then curves downwardly towards the forward side of the inlet. The said plate will be formed from relatively thin metal and while attached to members 4 and such other members as there may be, a forward portion 25 thereof is thereto at spaced points if desired.

The lower plate 24, as shown, extends upwardly from the entrance 26 and curves over and forwardly and then downwardly to a portion 30 which may be termed bottom plate, or apron.

As will be seen, the plates 22 and 24 are arranged to provide an upwardly'extending space which increases in vertical height upwardly from the entrance and then decreases in height forwardly to provide an outlet for stock between lip 28 and outer end 32 of apron 30. A breast roll is partially indicated by dash lines 31.

A transverse perforated roll indicated by 33 extends between the walls 2. This may be of usual form used in connection with inlets and may be driven or stationary as desired.

, Recirculation of stock is accomplished by inner and outer pipes 34 and 36. The outer pipe 36 is fixed to member 22 and has an opening or slot 35 in register with an opening or slot of said member 22 as shown. Inner pipe 34 which is connected at one or both ends to the stock supply is rotatable in pipe 36 and has an opening or slot 37 for registering with opening 35. By adjusting the pipe 34 relative to pipe 36 the openings may be establish and control pressure within the apparatus and the velocity of outward flow between 28 and 32. Any other means desired for controlling pressure by recirculation may be employed.

A transverse member 40 extends between and is secured to walls 2. A transverse carrier 42 is slidable up and down relative to member 40. Housings 44 secured to upper sides of walls 2 have gears 46 rotatable therein. A shaft 48 rotatable in the housings has a hand wheel 50 fixed thereto and worms 52 fixed to said shaft in the housings are in mesh with the gears 46. Threaded stems 54 fixed at lower ends to member 42 are in threaded engagement with the gears 46 so that as shaft 48 is rotated in one direction or the other, the member 42 is moved up or down.

Rods 58 are pivotally connected at lower ends to brackets 60 secured to the lip 28 of the slice. Upper ends of the rods 58 are pivotally connected to lower ends of members 64 which are threaded and in engagement with nuts 64 of the member 42.

The lip of the slice may be roughly adjusted up and down by means of members 54. The rods 58 are connectecl at intervals along the lip of the slice and are independently adjustable for adjusting the slice lip at spaced points as may be desired.

By rotating segments and thereby the former 12, the curvature of plate 22 in the vicinity of portion 25 thereof may be varied and the distance between said portion and plate 30 may be varied.

Thus with the adjustability of the former and of the slice lip it is possible to control the outlet of stock from the inlet and in combination with recirculating means for stock recirculation of stock is controlled.

The invention may be embodied in other specific forms without departing from the essential characteristics thereof. Hence, the present embodiments are therefore to be considered in all respects merely as being illustrative and not as being restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all modifications and variations as fall within the meaning and purview and range of equivalency of the appended claims are therefore intended to be embraced therein.

What it is desired to claim and secure by Letters Patent of the UnitedStates is:

1. An inlet for a paper making machine comprising in combination, transversely spaced side walls, lower and upper elongated walls extending transversely between said side walls continually from entrance to outlet ends of said inlet, rear ends of said walls being fspaeed apart to form said entrance and extending upwardly and ever forwardly in diverging relation and then forwardly and downwardly in generally converging relation to said outlet, said lower wall having an apron portion inwardly of said outlet provided with an extremity, said upper wall having a flexible free slice portion extending inwardly from said outlet provided with an adjustable lip adjacent the extremity of the apron, a former rotatably and adjustably mounted between said sidewalls over the flexible slice portion of the upper wall provided with a transverseiy extending convex surface engageable with the upper face of said slice portion for forming the longi: tudinal contour of the slice portion according to the adjustment of said former, and means for adjusting said lip.

2. An inlet for a paper making machine comprising in combination, transversely spaced side walls, lower and upper elongated walls extending transversely between said side walls continually from entrance to outlet ends of said inlet, rear ends of said walls being spaced apart to form said entrance and extending upwardly and over forwardly in diverging relation and then forwardly and downwardly in generally converging relation to said out-' let, said lower wall having an apron portion inwardly of said outlet provided with an extremity, said upper. wall having a flexible free slice portion extending inwardly from said outlet provided with an adjustable lip adjacent the extremity of the apron, a former rotatably and adjustably mounted between said side walls over the flexible slice portion of the upper wall provided with a transversely extending convex surface engageable with the upper face of said slice portion for forming the longijustment of said former, and means for adjusting said lip, and means for recirculating stock over said upper wall including a tubular inner member extending between said walls having an open end and an outer tubular member concentrically related thereto with passageways between said members and between said outer member and upper wall.

3. An inlet for a paper making machine comprising in combination, transversely spaced side walls, lower and upper elongated-walls extending transversely between said side walls continually from entrance to outlet ends of said inlet, rear ends of said walls being spaced apart to form said entrance and extending upwardly and over forwardly in diverging relation andthen forwardly and downwardly in generally converging relation to said outlet, said lower wall having an apron portion inwardly of said outlet provided with an extremity, said upper wall having a flexible free slice portion extending inwardly from said outlet-provided with an adjustable lip adjacent the extremity of the apron, a former rotatably and adjpstably mounted between said side walls over the flexible slice portion er the upper wall provided. with a transversely extending convex surface engageable with the upper face'of said slice portion for forming the longitudinal contour of the slice portion according to the adtudinal contpur of the sliceportion according to the ad justment of said former, and means for adjusting said lip, and a perforated roll between said walls and between said side walls adjacent the slice portion of the upper wall.

FOREIGN PATENTS Germany Dec 17,