US1229007A

US1229007A - Dandy-roll.

Info

Publication number: US1229007A
Application number: US15170717A
Authority: US
Inventors: Herbert Albro
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-03-01
Filing date: 1917-03-01
Publication date: 1917-06-05
Anticipated expiration: 1934-06-05

Description

H. ALBRO.

DANDY ROLL.

APPLICATION FILED MAR. 1, 1911.

1 29,007. Patented June 5, 1917.

INVEN TOR.

A TTORNE Y.

, DANDY-ROLL.

Specification of Letters Patent.

Patented June 5, 1917.

Application filed March 1, 1917. Serial No. 151,707.

To all whom it may concern:

Be it known that I, HERBERT ALBRO, a

citizen of the United States of America, and resident of West Springfield, in the county of Hampden and State of Massachusetts, have invented certain new and useful Improvements in Dandy-Rolls, of which the following is a full, clear, and exact description. I

This invention relates to improvements in dandy rolls and more especially to the construction of the openwork cylindrical frame which supports the outer gauze covering of the roll. I

The object of the invention is to provide an openwork supporting frame comprised in the dandy roll which is diametrically expansible and contractible, whereby an indefinite number of outer gauze watermarking coverings may be employed on a single supporting frame, thereby greatly lessening expense in a paper mill, and also materially saving space for stowage.

As a result of the exercise of thisinvention, it is possible to provide a dandy roll supporting frame which is so practical, easy and convenient of utilization as to render it acceptable and desirable to a paper mill owner.

The invention is described in conjunction with the accompanying drawings and is set forth in the claims.

In the drawings Figure 1 is a central longitudinal section, showing an exemplification of a dandy roll constructed in accordance with my invention.

Fig. 2 is a cross section on a larger scale, as taken on line 2-2, Fig. 1.

In constructing this roll, in a practical and entirely operative manner, I provide a central shaft A having right and left hand screw threads as a at its opposite end portions.

B and B represent a pair of sleeves loose and endwise slidable toward and away from each other on the shaft, and these sleeves are arranged with a space between the inner ends thereof within which space is provided a coil spring b, in compression and reacting against the sleeves to force them in an out ward direction.

C C and C O represent circular plates of spring metal, which are of dished or concavo-convex form, secured to, or made unitary with thesleeves.

These plates are made with radial slitse which extend from their outer edges radially, but not entirely to their centers, forming segmental sections (Z, hating are shaped outer edges f.

These plates are secured with the convexities thereof in reversed relations as regards the sets thereof, which are at opposite sides of the lineal center of the frame, that is as exemplifiedin the drawing, the plates C C at the left hand half of the frame have their bulge or convexity to the leftward, while the plates C C comprised within the right hand portion of the frame have their convexity toward the rightward.

Each of the segmental sections (Z has sets of longitudinal wires 7L secured thereto at its arc edge.

This frame, furthermore, comprises series of partially encircling wires 2', those of a given series,-in suitably spaced relations,- being secured to a given set, understood as corresponding thereto, of the longitudinal wires, that is, those which are carried by one of the segmental sections; and the partially encircling wires of a given series are extended for overlapping and free relations to longitudinal wires of adjacent sets thereof.

In illustration of this, it will be perceived with reference to the drawing, Fig. 2, that the wires 2', given series, and attached, by soldering or otherwise, -to the longitudinal wires h, carried by the left hand segmental section (Z, extend to overlapping relations with, but are unsecured to longitudinal wires carried by the adjacent segmental sections, that is, as here shown and .pointed out in the drawings, the upper section and the lower section.

The right hand partially encircling wires secured to the longitudinal wires, which are carried by the right hand section, are in duplication of those shown at the left of the view.

In this drawing, for the purpose of showing attached and unattached relations of the partially encircling wires, and the longitudinal wires, the former are shown as slightly distorted at their extremities for the purpose of more clearly indicating the clearance.

The relations of the partially encircling wires of the upper and lower segments to those of the opposite side segments are reciprocal, and those of one series are disposed to lie alternated with or intermediate between those of-another series, for the production of an-outer supporting portion of the dandy roll frame having on a casual understood as comprised in a inwardly, they cause a diminution of the convexity of the dished spring metal plates comprising the individual and independently operable segmental sections for a corresponding increase of diameter and increase of the circumference, or expansion, of the longitudinal and partially encircling wires to have a crowding fit or bind within the removable and interchangeable outer gauze covering or sheath m.

The release of the nuts by turning them outwardly permits the segment comprising spring plates, under their natural reaction, to contract in assuming their normal increased convexity, reducing the diametrical dimension. 7 I

The interposed spring, 6 is effective to form a medium of resistance at the inner ends of the sleeves, and to automatically as sist in the action of contraction when the nuts are turned in the proper direction.

Aluminum is susceptible of employment as the constituent of the segment including spring plates, but any metal having fitness to the purpose to form the plates or any other part or parts of the dandy is understood as being a mere matter of selection.

Changes within a considerable range of variation may be made in the construction of the openwork dandy roll frame without departing from this invention and without impairing the advantages thereof.

I claim 1. Ina dandy roll, an expansible and contractible openwork frame comprising circular concavo-convex spring plates having radial slits extending from their outer edges toward but not entirely to, their centers, forming segmental sections having are shaped outer edges, sets of longitudinal wires secured to the are shaped edges of the sections, series of partially encircling wires, those of a given series being secured to a corresponding set of the longitudinal wires and being extended for overlapping and unattached relations with longitudinal wires of adjacent sets, and means for varying the degree of the convexity'of the spring plates, to consequently vary their diametrical dimension and that of the dandy roll frame.

2. In a dandy roll, an expansible and contractible openwork frame comprising circuand being extended for overlapping and unattached relations with longitudinal wires of adjacent sets, and means for varying the degree of the convexity of the spring plates, to consequently vary their diametrical dimension and that of the dandy roll frame, as a whole. r

3. In a dandy roll, an expansible and contractible openwork frame comprisinga central shaft having right and left hand threads at its opposite end portions, a pair of sleeves loose and slidable on the shaft and having a space between their inner ends, a spring between the inner ends of the sleeves and exerting force thereon in opposite directions, circular concavo convex spring plates having radial slits extending from their outer edges toward but not entirely to their centers, forming segmental sections having are shaped outer edges, said plates being secured in reversely convex relations to both of the sleeves, sets oflongitudinal wires secured to the are shaped edges of the sections, series of partially encircling wires,

7 those of a given series being secured to a corresponding set of thelongitudinal wires, and being extended for overlapping and free relations to longitudinal Wires'of adjacent sets, and nuts on the oppositely reversely threaded end portions of the shaft coacting with the outer ends of the sleeves.

4. In an openwork expansible and contractible supporting frame for a dandy-roll outer-covering, sets of parallel longitudinal wires, those of all the sets being arranged to conform to the circumference of a7cylinder,longitudinal wires comprised in each set having are shaped circumferentiallyextending wires secured thereto, and which have their extremities extended for overlapping and unattached relations to longitudinal wires comprised in other of the sets, and means for contracting and expanding the longitudinal wires diametrically of the structure. v

Signed by, me at Springfield, Mass, in presence of a subscribing witness.

HERBERT ALBRO. Witness:

WM. S. BELLOWS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.