US1087536A - Rotary razor-sharpening machine. - Google Patents

Description

C. M. HERRING.

ROTARY RAZOR SHARPENING MACHINE.

APPLIGATION FILED DEC. 16, 1912.

1,087,536, Patented Feb..17, 1914.

WITNESSES TZAW INVENTOR CM- HE'HEINIl G. M. HERRING. R

ROTARY RAZOR SHARPENING MACHINE.

APPLIOATION FILED 1320.16, 1912.

1 0753 Patented Feb. 17, 19.14.

2 SHEETS-SHEET 2.

CHARLES at. summer, or roar won'rH, TEX-As.

Romany nazon-snanrnmne MACHINE.

Specification of Letters Patent.

Patented Feb.17, 1914..

' Application filed December 16, 1912. Serial No. 737,031.

To all whom itmay concern:

Be it known that I, CHARLES M. Hnnmno, a citizen of the United States, residing at Fort Worth, in the county of Tarrant and State of Texas, have invented new and useful Improvements in Rotary Razor-Sharpening Machines, of 'which the following is a specification.

This invention relates to razor stroppers, and particularly to devices of this ,kind utilizing rotating grinding cylinders and has for an object to provide an eflicient mounting for the rollers and means for operating them, and particularly, an improved blade holder adapted to function in'engaging a blade with two rollers alternately, and to transmit modulations ofthe pressure applied. It is an important purpose to reduce the number of elements or parts involved in such a device, whereby its operation and repair will be easily understood and accom plished.

Another particular object is to give a simple construction of holder and means for securing it in engagement with a. blade,

making use of'icertain elements essential to the before mentioned functions. I Y

A further purpose is to readily adapt a small device of this order to. accommodate any form of blade, including that of the old style folding razor permitting the grinding thereof without removal of the handle. Additional objects and advantages will appear, some being apparent'from the following description and from the drawings,

in which- Figure 1 is a perspective side view of my device, Fig. 2 is a top view, thereof, Fig} 3 is a side view thereof,Fig. 4 is a detail of the operating crank, Fig.- 5 is a perspective view of a blade holder in disengaged posi tion,Fig. 6 is a similar view of a holder modified in its gripping arms, Fig. 7 is a similar view of a further modification of the same, Fig. 8 is a similar view of a still further form modified in the same particulars.

Fig. 9, is an additional modification of the gripping arms, Fig. 10, isan end view of a modification of the grip structure.

There is illustrated a sharpener comprising the housing 10 formed of one piece of sheet metal, including the fioor 11, and the upstanding ends 11 turned upwardly at'right angles at each side of the floor and extending from front to rear of the housing. Suitable knobs 12 are attached to the under side of the floor at proper points. Adjacent the front and rear the sides are each provided with apertures 13 in which are journaled the trunnions '14 and 15 of the rollers 16. One of these rollers has two and the other one,

trunnion 14 setting nearly flush with the outer side of the ends of the housing. The other endof the last mentioned rollerhas an elongated trunnion provided with the teats 16 adapted to engage inthe spiral slots 17 in. the end of the sleeve 18 of the crank 19 by which the device is operated. It will be apparent that by this arrangement the rollers can only be turned in one direction,

that is, with their adjacent surfaces moving downwardly. The rollers are provided with one gear each at adjacent ends, thegears being somewhat larger than the intermediate portions of the 'rolls and in mesh,

whereby the two rolls'are operated together,

spaced relation, as at 20. The rolls are and their adjacent su'rfacesheld in proper surfaced with any customary or suitable material for use in sharpening razors, such as leather, for instance. The ends ll'are ex:

tended upwardly some distance above the tops of the rolls,'beiiig preferably inclined downwardly :toward' front and rear from their middle parts, or from a point centrally over the space between the rolls, where a notch 21 or open bearing is formed in each wall for a purpose to be indicated.

Blade holders "22 are provided, which it will be observed do not have 'tofbe materially modified toadapt them to use with; any of the familiar forms of blades now in use. As shown in all the figures except Fig. 10 they comprise two pivoted wings, 23 and 24, each having jaws 2 5 and 26 extendeddownwardlytherefrom and adapted to coengage with a blade presented therebetween. The wings and jaws are stamped integrally from sheet metal, and each adjacent each end has an ear 27 formed thereon and turned inwardly toward theopposite member, the ears being formed at the upper corners of the jaws, and one member maybe effect so as to receive the ears of the other member therebetween'if desired.- The ears are apertured and receive therethrough a long somewhat longer than the jaws in most cases,

but this proportion is not arbitrary and may be changed as found desirable, though it is considered preferable that the wings 'be as nearly as possible of such length that the fingers of an operator may be pressed there upon at a 'point equi-distant from the pin pivot with the edge of the blade held in the device.

The win s extend about at right angles to the jaws, tliough this is not essential, but it is desirable that the wings exten'd'nearly in a common plane when in engaged position, so that they may be conveniently engaged by respective fingers of an operator, pressed upon their upper sides, and the holder oscillated to bear the engaged blade against-the rolls alternately.

The jaws may be variously shaped to engage particular kinds of blades, and in Figs. 5 to 9 of the drawings, there are shown various forms adapted for engagement with the particular kinds of blades shown in the a respective views as presented for gripping. In Fig. 5 that form of blade consisting of a rectangular blank 30 of thin sheet steel.

sharpened at one edge and having a piece of heavier sheet metal 31 bent over the opposite edge, is shown,-and for gripping this the jaws have their outer edge portions 32 inset or offset from their inner portions to ward the opposed jaws at a spaced distance from their pivots so as to engage the blade just within the reinforcing piece 31 on the blade. In Fig. 6 the jaws are planiform and roughened'on their inner sides as at 33 for engagement with the blade 34 shown in presentation, and which consists of a plain blank of sheet metal sharpened at one edge. In Fig. 7 the blade is a plain blank substantially the'same as in Fig. 6, except that at each corner opposite the cutting edge, short nibs 35 are projected longitudinally therefrom. For holding this blade one jaw is provided with an inwardly turned ear or tooth 36, at each end. The opposite jaw is notched at the corners to receive the cars 36, and the blade is set between the jaws with the nibs engaged inwardly of the ears. In Fig. 8, the jaws are provided one with apertures 37 and the other with teats 38 adapted to project thereinto, and spaced for engagement of the teats through the apertures of the blades 39 and 39 there shown. In Fig. 9 the device is adapted for use with a blade 40 of the old style, or with safety razor blades having a similar cross sectional form. Here, the jaws are turned abruptly outward near the cars 27, and then turned inward at an oblique angle.

F or holding the jaws in forcible coengagcment with a blade, any of the forms of holders described may have pivoted on one wing the short arm 41 adapted to project over the opposite wing at distance, and having one edge portion turned upwardly at its the end of the arm willst-rike when moved from the outer end toward the'inner end thereof. The upturned side edge of the arm insures its proper engagement with the plate 44.

In Fig. 10 the holder is so modified that no fastening device will be required therefor, the two wings being formed integrally and extending in alinemen't for their major portions, their outer edges being turned downwardly slightly. Resilient jaw pieces 45 corresponding in form to such of those before described as may be found practicable with this form of the device aresecured to the under side of thawing piece disposed close enough together to hold a blade tightly when it is presented therebetween at one end and moved slidingly into roper position for grinding, the ends of the aws being slightly curved apart to facilitate, this operation if desired.

One side of the casing or housing is provided with an opening 48 consisting of a large upper portion for the reception of the thick part of the old style razor, and a lower part, between which fingers 49 forming the sides of the opening, project-"inwardly into close enough proximity to enga e the blade intermcdiately of' the cutting e ge and the back. By the use of this opening an old style blade may be sharpened without removal of the handle, the blade being inserted between the rolls through the opening, leaving the handle outside. The'fingers 49 prevent the cutting edge from striking the lower edge of the opening 48 and becoming dulled or nicked. The fingers are so spaced as to allow some play of the blade when the back is held a ainst the upper edge of the opening, and t e opening is located at such height as to allow the blade to engage the rolls at the proper point. The fingers 49 also guard the rolls from being cut during presentation of the blade.

In use, a blade being engaged in one of the holders between the jaws, and the arm 41 forced into firm binding engagement with the lockingplate, the blade will be held secnrely. The blade is then presented down on respective wings and alternately bearing downwardly thereon with the desired The blade is thus held freely holder; r

amount of forcewhile the crank is operated.

It is animportant advantage of this device that the degree of pressure may be most-conveniently modulated to obtain the finest' edge, yet permitting heavy and rapid grind- .a lurality of blades at one time, if desired.

The sizes of the rolls may be varied to give the frictional area considered best for efiiciency.

l Vhat is claimed is:

l. A sharpening machine comprising a housing, spaced grinding devices movable therein, and means to operate the grinding devices, open bearings at the sides of the housing, a blade holder constructed and adapted for detachable engagement with a blade, and having a pivot, element adapted to be set in the bearings, and oppositely extending wings on-the holder at the upper part for manualieng'agement to oscillate the 2. A device of the class describedcomprising a housing, parallel grinding devices movable therein, means for operating-them,

nected, and means to lock the jaws 'upon an open bearings at opposite sides of the housing between the devices, a blade holder com- PIlSlIlg pivoted jaws adapted for gripping engagement with a blade, lateral wings on the jaws, projections at each end of the ho-lderadapted to rest in the bearings, and means to lock the jaws upon a blade. I

3. Ina shar ening device having pivot bearings, and arasive means thereadjacent, a blade holder comprising two members each including a downwardly extending jawinwardly turned ears at or near the upper corners thereof and wings extending laterally outward therefrom at their upper edges; a pin member coengaged thnough the ears to hold, the members pivotallyconinterposed blade, said wingsbeing adapted for manipulation to oscillate the holder, the ends of the said pin being adapted to restin the bearings.

, 4 In a sharpening device, a blade holder comprising two pivotally connected jaws adapted for coengagement upon a blade, each having a wing projecting laterally from -the plane'of the blade, an arm pivoted upon the outer side of one wing, and adapted to extend transversely across the plane of adjacent jaw and engaged slidably over the opposite wing, alocking plate on the other having a curved edge eccentric to the pivot oft-he arm in the plane of oscillation of the arm and adapted to bind the end of the arm when 'swungthereagainst to hold'the jaws-in clamping engagement with a blade.

5. In a device of the class described, -a holder comprising two elements each including a downwardly extending work engaging jaw, and an operating wing extended abruptly and laterally outward from the upper side of the jaw, inwardly extending apertured ears at or near the upper corners of the jaws, the ears of one adapted to overlap and register with those of the other, a pin engaged through the ears and projecting longitudinally therebeyond, an arm pivoted intermediatel' of the wing of one element, the wing 02 the other having a curved slit formed therein eccentric to the pivot of 'the arm, the outer edge portion abuttin the slit being pressed upward and adapted to engage the end of the arm when swung theretoward, to hold the jaws in clamping position.

6. The combination of parallel grinding devices, an intermediate support, a blade holder constructed and adapted to be pivoted on the support for oscillation into alternate engagement with the grinding devices, the holder comprising two members eachof sheet metal each having oneside portion shaped, and adapted to cooperate with'the like part ofthe other member to grip a blade, pivotal connection between the members and means to engage said support, side portions of the members opposite said grip portions being bent abruptly outward adjacent the pivotal connections to form wings adapted to receive respective'fingezs of an operator thereon for oscillation of "an engaged blade by alternate pressure on each,

and means to secure the holder in engagement with the blade.

- F. B. LANTRY, -R-. V. ALLEN.

' In testimony whereof have hereunto set my hand in presence of two subscribing

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