US1578264A - Combination knife and scissors sharpener - Google Patents

Description

March 30, 1926; "1,578,264

- W. H. CHURCH COMBINATION KNIFE AND SCISSORS SHARPBNER Filed April 28, 1924 lyveqt-or Patented Mar. 3%, 1926.

UNITED ATE T' OFFI C'E; 4 wipmaivrn. onuncn, or-o'ii'rean r'innenm a, A r I COMBINATION KNIFE AND scissons snnnrnivnn.

Application filed April 28, 1924. Serial No. 709,694;

To ail whom it may concern: I

Be it known that I, Wrmaarr H. CiiUnoi-i, a subject of the King of Great Britain, a resident of the city of Calgary, in the Province of Alberta, Canada, have invented cer tain new and useful Improvements i11-lCO1libination Knife and Scissors Sharpeners, of which the following is the specification.- v

The invention relates to improvements in combination knife and scissors Sharpeners and a generalobject-of the invention is to: provide a simple, inexpensive and durable article whichtcan be utilized for sharpening knife or scissors blades and-which will do such work effectively. v g

A further object. of the invention is to provide a sharpener embodying sets ofrotatablymounted sharpening discs which are adjustable towards and away from each other thereby permitting one to make the cutting edge ofthe blade being-sharpened more or less acute as he desires.

.A further object of the invention isqto mount the discs of the sets so that they are permitted a lateral rocking movement, thereby enabling them to more efficiently I sharpen the blade' 'ect is. to provide-the sharpeneri with a pivoted scissors lin ng plate A further ob which will hold the scissors blade at a-propcr angle to one of the. setsof discs and permit of the eflicient sharpening of the scissors blades. 7 I

' Vith the above more important objects in view the invention consists essentially in the v arrangement and construction of parts hereinafter more particularly described, refer.- encebeing had to the acompanying drawing in which:

Fig. 1 is aside View of the device as it appears when used in sharpening knives Fig. 2 is an end view of'the'dcvice. Fig. 3 is a plan view. I

Fig. i is a plan view showing the discs turned laterally, a position which they take when the knife blade is being drawn thereacross. Fig. ure 3. I

Fig. 6 is an enlargedIdetailed vertical sectional view at 6-6 Figured In the drawing like characters of refer- 5 is ase ctional view at 5-5 Figence indicate corresponding parts in the sevv V present keen cutting edges; It is 'alsoto be observed that the side wings 3 and 4 have frame 1 of the sharpener atthesides with two similar upstanding and opposingside wings or hearing plates3 and 4 and also centrally with two outstanding' fastening ears o-and 6.- In the presentinstance, the wings and ears'are' integrally formed with the basejplate 2 andg the ears are provided with suitable holes to receive fastening screws 6 and 7. whereby the body can be permanently fastened to an under support such as a table.

The wings carry a stationary elevated cross'shaft 8 and ajlower pivot pin 9 and I on'the pivot pinl pivotally mount thelowcr ends of upstanding, spaced, opposing side arms 10 and .11 which are formed at the inner end of anoutwardly extending adjust ing arm 1'2,'the adjusting arin overhanging one endofthe base plate. The upperends of the side arms lO and 11 are forked as m dicated at 13 and the forks carry anelevated cross shaft 14, parallel to the .shaft8 and'the I J ends of the former shaft are extended'into similar slots 15 formed in the side plates i and 4- and arranged concentr c to the pivot in 9.. An ad ust ng screw, 16I is screw threaded through the outer end of the adjusting arm 12 and has a the ;lOW6r;'I1 ll thereof engaging the "base plate and the upper end providedwith a suitable grip such asajwingedrheadi A spring"18 s mounted on the pivot pin and engages, the I base plate and" the adjusting arm andinormally presses the adjusting" arindownly .7

According t o the. above arrangement, it

willbe apparent thatby'turning the screw in one direction or the othen-I can rock the shaft 14 towards 'or; away from tl'ie fshaft 8 and thes'crew willsnaintain in any adusted position.

' On each ofthe'shafts 8 than I mount a set of similar sharpening discs 19, the discs being spaced apart a I predetermined distance'by inserted washers 20. The dis'cs'and a washers are loosely mounted on the shafts so that, they can rock thereon, vand when the discs are placed on the shafts, the set of discs on the shaft'la are alternated with those on the shaft Sand the inner edges of I the disc's lap as best shown .in, Figure 3.

The discs and-the washers are also peremitted free end playon the shafts and the disc peripheries are sharpened so that they the upper portions thereof cut, for the a greaterpart, more or less concentric to the :"shafts'and their radii somewhat less than V the radii of the discs and that between the theknife blade is pulled endwise and pressed downwardly, the discs will swing laterally and upset slightly','as best shown in Flgure 4 and the cutting edges of, the discs willac cordingly obtain a better bite on theknife blade than if they were held in parallelism I as is usually done. The cutting edge of the knife blade can be varied by adjustingthe screw 16 to swing the discs closer together or farther apart. If a very acute knife edge is desired, the screw will be adjusted to move the sets of d'iscsapart, whereas-if a'less acute edge is wanted, the discs will be brought closer together. Here it will be observed that as the shaft 14 is moving" away from t that 8, the cutting corner'22, so to speak,

1 discs become more vertical.

moves down and the biting edges of the In order. that scissor blades maybe sharp- I ened with this device,,I provide ascissors lining plate 28 which is provided with a finger piece 24, two side arms 25 and 26 and a pair of stops 27 and 28 .carriedbythe side arms. The side arms are pivotally mounted on the shaft.8 and the stops 27 and 28 are adapted,.- when the lining place is swung upwardly a nd inwardly; to engage with the pockets and stop the lining plate in a substantiallyver'tical position ,or as shown in dotted outline in Figures 1 and 5. Inthis movement, the lining plate swings entirely clear of the discs on the shaft 8 and when it is brought to' the vertical position, itoverhangs the innersides'of' the discs onthe shaft 14. VVhen' used'for sharpening scis sors, the'lining plate isin the position shown in dotted outline in Figures 1 and 5 and the scissors blade is held in thevertical pos'ition against the liningv plate and drawn over the presented edges ofthe underlying discs carried 'by the shaft 14. 'During this action, care should be taken that the lining: plate is held Vfirmly as this will insure a} uniform cutting edge on the scissors bladeJ The angle ofintersection, indicated at of the lining plate with the cuttingeolges of the discs, is the angle of the cutting edge of the'scissors blade. In this connection it 15 also to be noted that thediscs on the shaft 14 can be adjusted to make the cutting edge of the scissors blade 'moreor less acute in r the same manner as is done 'withia knife bladeand in this connection it is to be noted that the scissors blade is only drawn across.

one seto'f' discs, that islthose' carried by the shaft 14. I I

lVhat I claim as my invention'is V v 1. In ahblade sharpener, st base provided with opposing side wings, a cross shaft car ried by the wings, a set of similar spaced sharpening discs rotatably mounted on the shaft, a rocker member carried by the base,

a cross shaftshiftable with therocker member and movable towards or away from, the

former shaft, means for holding the rocker member in any adjusted position and aplurality of similar'suitably spaced sharpening discs carried by the shiftable shaft and'alternatedwith the. former disc. 7

' 2. In a bladesharpenen a base provided with opposing upstanding side wings, an

elevated cross shaft carried by the wings, a

plurality of suitably spaced sharpening discs rotatably mounted onthe shaft, a pivotally mounted adjusting arm contained be tween thewings'and provided with upstanding opposing side arms, a cross shaft carriedby the side arms,- a plurality of suitably spaced sharpening disc s" rotatably mounted on the latter shaft, the said latter discs being alternated in respectfto the'form'er discs i and an adjus'ting screwv carriedby the adjusting arm and engageable with the. base. Signed at Calgary, Alta, this 14th day of March, 1924. 7 I

WILLIAM H, CHURCH,

Images