US723463A - Means for cleaning knives. - Google Patents

Description

No. 723,463.- PATENTED MAR. 24. 1903.

C. HEYWOOD. MEANS EUR CLEANING KNIVES.

APPLIUATION F'ILED MAY 26, 1902. so MODEL. 2 SHEETS-SHEET 1.

Wz'nses Inl/anim M W @www AW PATENTED MAR. 24, 1903.

G. HBYWOOD. MEANS POR GLEANING KNIVES.

APPLIOATION FILED MAY ze, 1902. no Holm.. 2 sums-SHEET a.

UNITED i STATES PATENT grrrcE.

OEOIL HEYWOOD, OF MAlDA VALE, LONDON, ENGLAND.

i MEANS FOR CLEANING KNIVES.

SPCIFCATON forming part of Letters Patent No. 723,463, dated March 24, 1903.

Application iiled May 26, 1902.V Serial No. 109,114. (Nov model.)

To a/ZZ whom if may concern.:

Be it known that I, CEcIL HEYWooD, gentleman, a subject of the King of Great Britain, residing at 69 Morshead Mansions,Maida Vale, in the county of London, England,have invented certain new and useful Improvements in Means for Cleaning Knives or the Like, of which the following is a specification, reference being had to the drawings hereunto annexed and to the letters marked thereon.

The invention relates to improvements in means for cleaning knives or the like.

Various kinds of knife-cleaning machines have from time to time been brought before the public; but those that have possessed the requisite qualities to render them efficient have been too costly to come into general use, while the cheaper kinds have been more or less expensive, added to which they, or most of them, have failed to give satisfactory results, the consequence being that at the present time the old-fashioned and primitive knife-'board is still in general use.

Now the object of the present invention is to obtain a simpledevice which will be extremely portable, occupy little space, and clean both sides of the knife at once and that in a highly-efficient manner, and yetcost lit,- tle,ifany,inore than the common knife-board.

In the accompanying drawings, Figure 1 is a side elevation of an instrument constructed according to the present invention and showing the same iu its open position ready to receive a knife. Fig. 2 is a plan thereof, but with the upper lever or arm' broken away. Fig. 3 is a transverse section taken on the line 1 1 of Fig. l. Fig. 11 is a similar view to Fig. 1, but showing the instrument nearly closed. Fig. 5 is a side elevation of part of the instrument, showing the same completely closed and thus fastened.. Fig. 6 is an end view thereof, partly in section. Fig. 7 is a similar view to Fig. l, but illustrating a slight modification in the means employed for retaining the main springs in place. Fig. 8 is a plan thereof, but with the upper arm or lever broken away. Fig. 9 is a similar view to Fig. l, but illustrating a modification in the means for obtaining a plane rubbing-surface. Fig. 10 is a plan thereof with the upper arm or lever broken away. Fig. 11 is a side view of part of one of the canvas-covered plates separately. Fig. 12 is an under side View thereof. i Fig. 13 is a similar view to Fig. 1, illustrating a further modiiication. Fig. 14 is a plan thereof; and Fig. 15is a similar view to Fig. 1, illustrating a stillA further modification.

In the several figures, in which like parts are indicated by similar letters of reference, Figs. 11 and 12 are drawn to an'` increased scale with respect to the other figures of the drawings.

Referring to Figs. 1 to 6, a, represents the arms or levers or platforms constituting the body of the instrument, andthese arms or levers are at one end' thereof pivotally connected together by a hinge-joint a', so as to be capable of closing or folding one upon the other, or nearly so, as shown at Figs. 4, 5, and 6. At the other end the arms or levers a are fashioned into handles a2, by the aid of which they may be manipulated, and they are furnished with a fastening device, consisting lof a revoluble eye 0,3, carried by one part, which is adapted to be passed through a coacting slot a4 in the other part and then turned into a position at right angles with the slot, as shown at Figs. 5 and 6, by the aid of which the arms or levers a 'may be retained in their closed position when required, or any lother suitable fastening device may be substituted therefor. One of the arms or levers a, is furnished upon its inner face with several projections, stops, or distance-pieces 0.5, which in the closed position of the device come against the inner face of the other or opposite arm or lever Yandinsure a given spacebeing preserved between said arms or levers '0., as shown more particularly at Figs. 5 and 6, and one of said stops is arranged at the inner ends of the arms or levers o. adjacent to the hinge-joint 0,', and the others are located,'respectively, at and near to the outer end thereof, so as to leave a considerable space between the two stops a5 nearest to the inner end or hinge ct. Within this space is fitted a bowed spring b, of ribbon or plate steel and of a width equal to that of the lever or arm a, or thereabout, and the ends of this spring h are provided with slots b', and coacting headed screws b2 are passed through the slots and screwed into the arm 0r lever o., by which means the spring b is controlled and ICO guided in its movements, or plain holes might be substituted for the slots I3. Over the springb and longitudinally thereof is strained a strip c of canvas webbing or other suitable material of about the same dimensions as the spring b and which at its ends is fastened to the arm or lever a by nipping it beneaththe adjacent stops a5. The springb, arranged in the manner above described, naturally assumes the form of an arc at ils ends, springing from the arm or lever al, and thus maintains the canvas slrip `c in the required strained condition. Within the radius ofthe arc of the main spring b and arranged centrally with relation to the length of said main spring, butin an inverted position, is a supplemental bowed spring d, which is formed to an arc of a smaller radius than the main spring b and is at its center fastened to the arm or lever a by means of clips d', or it might be otherwise fastened, so as to leave its ends free to act upon the main spring b at the times desired. The other or opposite arm or lever a is provided with a similar arrangement of springs b and d and canvas or like covering c, which latter in this case is fastened by nails or screws c', and thus when the two arms or levers a are forced together by means of the handles a2 the canvas-covered main springs b will be compressed one against the other, as shown at Fig. 4, and aided by the supplemental springs d will be caused to assume a right line, while the supplemental springs d will at the same time reinforce the main springs b and impart thereto and to the rubbing-surface c the necessary rigidity to perform the required work; but the supplemental springs d may for the sake of cheapness be dispensedwith, if desired, although the action of the device will not be so efficient.

In order to use the device, the arms or levers a, are opened and the canvas or like rubbing-surface c is coated with brick-dust, emery-powder, or the like, and the blade of the knife to be cleaned, which is held in one hand, is inserted between the canvas or other rubbing-surfaces c, and the handles a2 of the arms or levers a, which are held in the other hand, are forced together until the required pressure is attained, and the knife-blade is moved several times to and fro, when it will be eihciently cleaned upon both sides and highly polished, while by reason of the simple manipulation required alarge number of knives may be cleaned in a comparatively short period of time.

In the example given at Figs. 7 and 8 the device is identical with that hereinbefore shown and described, except that instead of the main spring b being slotted at its ends and secured by a guide stud or screw b2 and the canvas or like strip c fastened beneath the stops a5 said canvas strip c is at its ends fastened to the lever or arm a by screws or nails c' and for the sake of cheapness constitutes the sole means of controlling and guiding the main spring l).

In the example given at Figs. 9 to 12 the bowed springs are dispensed with and the canvas or like strips c are carried by approximately rigid planes e, while said planes are i supported by helical springs b d, and in order to impart a convexity rather than a concavity to the planes e the center springs d are formed stronger, so as to afford a greater resistance than the end springs b. The springs b and d are fastened to the planes e by means ofstuds or rivets 3 d2, and the ends of the canvas strips c are passed around the ends of the planes c and secured by the springs b, or they might be otherwise fastened in any convenient manner.

In the example given at Figs. 13 and 14 the two parts a, constituting the body of the device, are connected together at both sides thereof by means of links or levers a, pivotally connected with the two parts of the body a. at a, so as to produce a kind of parallel motion, while the upper part of the body ais provided with a knob or handle a2, so that by the aid of simple pressure applied thereto vthe one part may be forced toward the other part in therequired manner. In other respects the device is similar in construction to that hereinbefore shown and described with respect to Figs. 1 to 6, except that the means employed for fastening the spring b and canvas strips c are similar to those shown and described with respect to Figs. 7 and 8.

In the example given at Fig. 15 the device is identical with that hereinbefore shown and described with respect to Figs. 1 to 6, except that the set of springs b and d upon the upper arm or lever d is dispensed with'and the strip of canvas or the like c is fastened directly upon the inner face of said arm or lever, and it will be obvious that this peculiar construction might be employed in connection with any of the arrangements shown and 'described with respect to the other figures of the drawings, although it is probably inferior to all of ithe arrangements shown and described.

It will be obvious that the construction and arrangement of the various parts of the device may be otherwise modified without departing from the spirit of the invention.

By the means hereinbefore described a simple and inexpensive knife-cleaning device is obtained which is much more efficient and portable than the old-fashioned knife-board and equally efcient as some of the more costly contrivances hereinbefore referred to.

Having now particularly described and ascertained the nature of the said invention and in what manner the same is to be performed,

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by its ends fixed upon each of the opposite faces of said parts longitudinally thereof and coextensive therewith in length and Width in such manner that the arcs of saidsprings are opposed to one another and when pressed together become flattened into a right line and strips of exible material covering the meeting faces of said springs substantially as herein shown and described and for the' purpose stated. e

2. In a knife-cleaningdevicea body formed of two parts piyotally connected at one end and adapted to be moved apart and forced together by hand, a single bowed plate-spring by its ends fixed upon each of the opposite faces of said parts longitudinally thereof and coexten'sive therewith in length and Width in such manner that the arcs of said springs are opposed to one another and when pressed t0- gether become flattened into a right line, strips of flexible material covering the meeting faces of said springs and supplemental but inverted bowed springs of a smaller radins than the main springs carried by the two parts of said body within the arcs of the main springs and acting to reinforce the same substantiallyT as herein shown and described and for the purpose stated.

CECIL HEYWOOD. Witnesses:

C. MELBOURNE WHITE, C. H. WHITE.

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