US59979A - Improved suefaces foe washfflg-maohines - Google Patents

Description

@einen giedre @sind @frn IMPROVED SURFAGES I'OR WASHING-MAGHINES.

GEORGE M. DEN ISON OF NEW LONDON, `CONlilC'llCl.

Letters Patent No. 59,979, elated liotuentberA 27, 1866.

SP-ECIE'IOATION.

TO ALL WHOM IT MAY CONCERN Be it known that I, GEORGE M. DENISQN, of New London, in the county of New London, and State of Connecticut, have invented a new and useful improvement in Surfaces for Washing-Machines, Snc.; and Ido hereby declare that the following is a full, clear and exact description of the same, reference being had tothe accompanying drawings, making a part of this specification, in which- Figure 1 is a vertical longitudinal section of a washing-machine furnished with a rubber constructed according to my invention.

Figure 2 is a transverse section, on an enlarged scale, of suoh rubber. Figure 3 is a transverse section showing a modification of the same. Similar letters of reference indicate corresponding parts in all the figures.

This invention consists in the construction of the ribbed or corrugated rubbing surfaces of wash-boards, washing-machines, and the like, of sheet India rubber folded over and clamped between strips of wood or other hard material, in such mannerithat the ribs or eorrugations formed upon such rubbing surfaces are rendered sufficiently yielding and elastic to prevent any injury to the cloth or fabric while washing the same, at the same time that the said washing surfaces are rendered capable of being manufactured at a mch lesslfcost than if the aforesaid ribs or corrugations' were formed entirely of India rubber.

My invention is represented in iig. 1 as employed in a washing-machine, of which the tub or body is shown at A, and has secured in it an inclined false bottom, a, which is constructed with transverse ribs a of any suitable construction and conformation, and which constitutes the fixed or stationary rubber of the machine. A guide, b, is formedeupon the inner surface of each side of the tub, A,`by means of two slats or cleats 11,', secured to the said inner `surface at a suitable distance apart, and in a position nearly or quite parallel with that of the inclined rubber, a. B indicates a sliding frame, the outermostend piece, c, of which constitutes ahandle by which the said frame maybe moved to and fro, and the innermost end piece, d, of whichhas its extremities extending laterally beyond the side pieces of the aforesaid frame; the said extremitiesbeingmade of `cylindrical formgas shwn in `dotted outline, and projecting into the guides b in such manner asfto furnishafulcrum upon which the said frame B may be turned up or down at pleasure, at the same time that a longitudinal vibrating movement is permitted thereto by the sliding `of the extremities of the end piece d in the'guides b.A i Attached tothe under side. 'of the frame B, at a suitable distance from the rearmost end thereof,`is the movable rubber C, which is constructed as follows: `any desired number of flat strips or blocks, e,`,ofany suitable wood, and of any proper width and thickness, are placedl side by side with a sheet, f, of .India rubber folded alternately over the" lower and upper edges'of the said strips, and also passingv between the same, as shown in iigs.`1 andV 2; a fiat plate or piece, e', eitherrof woodbr metal, is then placed'upon the outermost ends ofthe'rubber sheets, f, to hold the same in place;` andbolts sho-wn in dotted lines atyg are passed transversely/through the mass of wooden strips or blocks, e, andV through thepieces", insuch manner as to securely hold the aforesaid strips, togetherwith the sheet, f, firmly clamped throughbetween them, as represented in the drawings. Instead of the boltsg, any other suitable means of confining the strips e in place may be employed. The lower vedges of these strips, e, under which the sheet f is passed or folded, as just set forth, project below or beyond the lower edges of the remainder of the said strips, as shown at e`, and may be made of semicircular or rounded form. The sheet f should not.

be drawn tightly upon these downwardly projecting edges, but should be loose, or loopedras it were, upon them, so that a certain degree of flexibility may be allowed to the portion thus folded or looped upon the aforesaid lower edges of the said strips, as will be presently further" set forth. The movable rubber C, asthus constructed,

is attached to a top plate, h, which is in turn attached in 'any suitable manner to the frame B. The cloths or `fabrics to be washedare placed uponthe false bottom or stationary rubber, a, and a vibrating movement is com-` municated to the frame B, the movable rubber C being at the same time pressed down upon thec'lothes or fabrics, whereupon the ribs or corrugations formed by the downwardly projecting edges e of the alternate strips e, and the elastic rubber covering f folded or looped over the said edges as hereinbefore explained, rub and press upon the' fabric in such manner as to effectually expel Vthe dirt and impurities therefrom, the covering orrubberportion `of the said ribs being sufficiently yielding and elasticv to prevent theaforesaid ribs or corrugations from tearing or abrading the fabrics, atthe same time that, supported by the edges of the strips e upon which it is folded, it possesses suflicient stiifness to properlyfrub the fabric, as just Vhereinbefore explained; By these means the action of theribs or corrugations of the movable rubber C, or in other words the rubbing or washing surface thereof, is rendered quite as eicient in rubbing the cloth or fabric as if made wholly of India rubber at the same time that the cost of manufacturing the same is greatly reduced as compared with that which would be the case if the said ribs were formed entirely of rubber. If desired, thel ribs or corrugations thus formed may be arranged obliquely or diagonally upon the rubber instead of transversely thereto. The rubber, C, as thus constructed, Amay not only be employed in washing-machines, as hereinbefore set fortl1, but may also be used as a wash-board or similar device, in which case it may be of any suitable size and with both of its sides or surfaces alike, as sho-Wn ing. 2, the edges of the alternate strips e projecting from the opposite-sides of the rubbei` and having the sheet India rubber f folded over or upon them in the same manner as hereinbefore set forth regarding the lower or rubbing surface of the rubber C as used in a washing-machine. Instead of being used in the form of a continuous sheet, as hereinbefore set forth, the sheet India rubber f may be formed in strips and folded upon andv over the projecting edges of thewooden strips or blocks e in substantially the same manner as when a. continuous sheet is employed; the edges of the rubber strips beingclamped between the aforesaid wooden strips in the same manner as the intermediate portion of the continuous sheet of rubber, as hereinbefore fully set forth. l Furthermore, instead of making the strips f. of wood, any other suitable hard material may be employed in plage thereof.

What I claim as new, and desire to secure by Letters Patent, is-

The construction of a ribbed or corrugated washing surface of sheet India rubber folded over the edges of and clamped between strips f, substantially in the manner herein set forth. I

G. M. DENISON. Witnesses: Y

A. LE CLERc, G. W. REED.

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