US2265577A

US2265577A - Scissors sharpener

Info

Publication number: US2265577A
Application number: US292280A
Authority: US
Inventors: Howell J Rains
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-08-28
Filing date: 1939-08-28
Publication date: 1941-12-09
Anticipated expiration: 1958-12-09

Description

Dec. 9, 1941. J l s SCISSORS SHARPENER Filed Aug. 28, 1959 gvwm vtoo HOWELL J BA m/s Patented Dec. 9, 1941 sorssoasl snanrnrmm Howell J. Rains, Mansfield,.La. Application August 28, 1939;.SeriaL'NoaZQh-ZSDF 2 Claims This "invention relates -to a scissors sharpener. An object of the invention is 'to provide ahand tool'-'of* the character described particularly constructed 'fdr use in sharpening the blades of scissors,- although the tool may be used for ing-implement to be usedin sharpening the blade.-

Wherr-th'e blade is inserted into'the'viseit must be adjusted lengthwise until the beveled portion to be operated on is in exact parallel relation with th'e support for the grinding implement. The tool is provided with means for making an indicating mark on the blade when so adjusted and the tool is also provided with a pointer which will be opposite said mark when the same is formed so that when the blade is to be again sharpened it may be quickly and accurately located in the vise with the pointer opposite the mark on the blade which has been so made.

When the blade is properly adjusted in the vise and secured against movement therein the support for the grinding implement must then be adjusted so that when the grinding implement is resting on said support its grinding face in contact with the beveled portion of the blade will be inclined so as to exactly fit said beveled portion to accomplish a uniform grinding action throughout the beveled area of the blade. For adjusting the support 'an adjusting screw is provided having a scale thereon so that when the support is once adjusted for a particular blade the scale can be noted and when said blade is again to be sharpened the adjustment of the support can be quickly and accurately made.

It is another object of the invention to provide a scissors sharpener of the character described which when properly adjusted will enable the user to quickly and easily apply the grinding implement or stone to the blade without danger of injury to the blade and may sharpen the cutting edge from end to end thereof with little effort-or attentions With the above-and: other objects in view the invention: has particular relation to certain novel.

. features-oi construction; operation and arrangement of parts,z an example of which is. given .in. this specificationand"illustrated in the accompanying drawing; wherein Figure l-ishowsafront elevation of the tool, partly in section.-

F-igUI e- Z-ShOWSaYI end elevation shown partly. in: sections 1 Figure .3 (shows a plan View,

i'gureA shows an elevational view of the movable ja-w oi the vise,'an'd Figure ti' shows a sectional view thereof taken on. the line 1 5-5of .Figure 4.-

Referring now mor ziparticularlyrto the drawingi wherein like numerals, of reference designate similar ipartsiinl each of'ithe figures, the numeral tdesignatesia frame of a general arcuate shape havingl:aninternallyitapped bearing at oneend: andi.whose:.oth'erk end is widened: and formed with an arcuate end notch 3iwith'the fixed :clamp jaws 5'4; ldrone onceach zsidecof vthe notch: 3a. Projecting forwardly from the widened end of the frame and arranged parallel are the

ears

5, 5. Between these ears there is a U-shaped jaw member 6, the upper ends of whose side arms are provided with the movable clamp jaws 1, l. The member 6 has the

end pintels

8, 8 which rotate in suitable bearings as 9 in the ears 5. A clamp screw I0 is threaded through the frame I and its inner end bears against the lower end of the U-shaped member 6.

The blade to be sharpened may be inserted between the fixed and movable jaws as indicated in dotted lines in Figure 1, said blade resting on the shoulders H, I2 and the clamp screw it then screwed inwardly to cause the jaws, forming the vise to securely grip the blade.

On the frame I there is an upwardly extended ear I3 and pivoted to this ear there is a forwardly extended arm l4 secured to the free end of which there is an arcuate saddle IS in which there is mounted a cylindrical support I6 preferably formed of glass. Before the blade is clamped in the vise it should be adjusted until the beveled face on its edge is in exact parallel relation with the support l6. In use the stone, file, or other implement used for sharpening the blade will lie on the support I6 and on the beveled edge of the blade and consequently said support should be adjusted so that said sharpening implement will lie at the same angle as the angle of the bevel as is indicated in dotted lines in Figure 2. This adjustment of the support I6 is accomplished by an adjusting screw I1 which is threaded through the tapped bearing 2 and whose upper end engages the underside of the free end of the arm I4 as shown in Figure 2. This adjusting screw IT has a scale l8 on one side as shown.

When the blade has been adjusted to the proper position a mark should be made on said blade so that when it is again inserted into the sharpened and said mark is brought exactly opposite the pointer IS the beveled edge will be r in exact parallel relation with the support It. In this manner the blade can be quickly adjusted" in proper position in the vise.

For the purpose of making this mark on the blade a bracket 20 has been provided. Asshown this bracket is mounted to rotate on the transversely aligned spindles 2|, 2| which extend inwardly from the side arms of the jaw member 61 as shown in Figure 2. The bracket 20 is upwardly arched, and carries a pointed punch22. One end of the bracket is formed square as shown in Figure 5 and a strong fiat spring 23 is secured at its outer end to the jaw member 6 and its inner end is free and rests against one side of the square end of said bracket as shown in Figure 5. The bracket may be pulled backwardly, or away from the blade, when the blade is adjusted to the desired position, placing the spring 23 under tension and upon release of the bracket the pressure of the spring will force the punch 22 suddenly against the blade thus making the desired mark exactly opposite the pointer l9. The bracket may then be retracted into the position shown in dotted lines in Figure .4, the spring v 23. yielding to permit this and the spring will then rest against the opposite side of the square end of the bracket to hold the bracket in said retracted or inactive position until it is desired to make another mark on the blade or until it I is desired to mark'the blade of another pair of scissorsto be sharpened.

At times it is desirable to use a polishing rod for smoothing up the edge of a blade. This polishing rod is used in the same manner as the stone or file as hereinabove explained. For convenience the support l6 may be made hollow and the polishing rod as 24 for convenience may be kept therein and retained against accidental dis placement by means of a retainer 25 which may be normally held closed by a suitable spring 26.

The drawing and description are illustrative merely, while the broad principle of the invention will be defined by the appended claims.

What I claim is:

1. A blade sharpener comprising an arcuate frame having spaced clamp jaws at one end, spaced clamp jaws pivoted to said end of the frame and arranged to cooperate with the fixed jaws to clamp a blade between them, a clamp screw threaded to the frame for actuating the pivoted jaws into clamping relation with a blade between the pivoted jaws and the fixed jaws and for releasing the pivoted jaws from the blade, a forwardly extended arm pivoted to the frame, an arcuate saddle on the free end of said arm, a support for a sharpening implement on the saddle and an adjusting screw threaded'to the frame and forming means for adjusting said arm on the frame.

2. A blade sharpener comprising a frame n'av ing a fixed clamp jaw at one end, a clamp jaw pivoted to said end of the frame and arranged to cooperate with the fixedjaw to clamp a blade; between them, a clamp screw having a threaded connection with the frame for actuating the pivadjusting screw having a threaded connection with the frame and engageable with the arm for adjusting said arm and support relative to the frame.

HOWELL J. RAINS.