US1374819A - Shears - Google Patents

Description

J.. H.-BY.ER.

SHEARS. I APfLICATlON FILED 1 ULY16. 1920. 1,374,819., Patented Apr. 12, 1921.

2 SHEETS-SHEET l.

I g INVEPVITOR WITNESS:

J. H. BYER.

SHEARS.

I APPLICATION FILED JULY 16, 1920.

1,374,819. Patented Apr. 12,1921.

EET 2.

. z sums-s14 omrsosrarss g Joan B'Ynn, or ORRTANNA, rnnnsYLvAnm.

' i SHEARS.

Specification of Letters iatent Pat t p 1.

' Application filed July 16, 1920. Serial No. 396,651.

T 0 all whom it may concern:

Be it known that I, JOHN H. BYER, a citizen of the United States, residing at Orr tanna, in the county of Adams and State of Pennsylvania, have invented new and useful Improvements in Shears, of which the following is a specification.

This invention relates to improvements in shears and the principal object of the invention is to provide a third blade for the shears with means whereby it can be used or not as desired.

Another object of the invention is toprovide means for locking the main blades of the shears together when the third blade is to be used, said locking member also acting to hold the third blade in inactive position when the main blades are being used.

This invention also consists. in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illus-- trated in the accompanying drawings and specifically pointed out in the appended claims. V

In describing my invention in detail, ref erence will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and'in which Figure 1 is an elevationof the shears in closed position.

Fig. 2 is a similar view with the shears in open position. V y

Fig. 3 is a section on line 33 of Fig. 1.

Fig. 4L is an edge view. y

Fig. 5 is an enlarged end view showing the locking means. I

Fig. 6 is a view of, the centralmember.

In these views 1 and 2 indicate the main blades and 3 the auxiliary or third blade, which in the drawing is shown as a button hole cutter, but it will of course be under stood that this blade may be made in any desired form as can also the otherblades. The

handles 4; and 5 of the blades 1 and 3 are made in the usual manner while the shank 6 of blade 2 is formed from a straight piece of small dimensions and arranged to lie between the handles i and 5 of the other blades. The three members are pivotally connected together by the usual bolts 7 and the member carrying the shank 6 lies between the other two members. The handle 4B of member 1 is made thicker than the blade part and this thick part terminates in an 7 inclined shoulder 8 adjacent the pivotal point. The shank 6 is also of greater thickness than the blade and intermediate the said shank 6 and the blade isa wide part 9 which terminates in the inclined shoulder 10 for co -acting with the shoulder 8 and on the other face this wide part tapers oil and forms an ofi-set portion 11 which engages a recess 12 formed in the third member between its, handle part and its pivotal point,

the end of the off-set portion being curved as at 13 to engage a curved shoulder 14 formlng the end of the recess. Thus when the shears are closed the handle portions will form a snug fit with the handle portions lying in the same plane as the blade portions and the shank part Got the third member will make a neat fit with both of the handle members a and 5 of the blades 1 and 3.

This shank 6 may be locked to either one of the handles 4: and5 by means of a spring pressed latch member 15 at the end of' said shank engaging the pins 16 on said handles 4: and 5. locked to the blade 2 so that the two main blades may be used as in the ordinary manner or the shank 6 may be locked to the handled so that the blade 3 may be used. This blade cooperates with the cutting edge 17 formed on the rearouter face of the blade 2. The shank 6 is made slightly shorter than the handles 4 and 5 so that the latch member will occupy the space between the ends of said handles so as to not interfere with the proper use of the shears.

It is thought. from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may.

make changes in the construction and in the combination'and arrangement of the several Thus the third blade 3 maybe parts, provided that such changes fall within the scope of the appended clalms.

What I claim is I I 1. A device of the prising a pair of main blades and a third blade cooperating with the rear edge of one of the other blades, said third blade engaging the outer face of one of the main blades class described com- I and this main blade having astraight shank fittingbetween the handles of the other blades, a spring latch on the end of said shank and pins on the handles for engaging said latch.

2. A device of the class described com prising three superimposed blades, the central blade having astraight shank fitting between the handles of the outer blades, means 5 for detachably connecting the shank with 1 either of the handles of the outer blades, an ofiset part connecting the shank with the blade, said oflset part being beveled and providedwith shoulders and the outer blades being provided with shoulders and recesses 10 for cooperating with the shoulders and recesses of the middle blade.

In testimony whereof I aflix In signature. JOHN BYEIERJ

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