US1368906A - Punch and shear - Google Patents

Description

A. E. BURNER.

PUNCH AND SHEAH.

APPLICATION FILED IvUNE I2. 1920.

1,868,906, Patented Feb. 15, 1921.

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PUNCH AND Sunnis.

Specification of Letters Patent.`

Patented Feb. 15, 1921.

Application led .Tune 12, 1920.V Serial No. 388,559.

To @ZZ whom t mag/*concern l c Be it known that I, AUGUSTUS DnizNnR, a citizen of the United States, residing at Evansville, in the county of yRoel; and State of Wisconsin, have invented a new and useful Punch andShear, of which the following is a specification. Y

This-invention relates to hand4 operated cutting and punching machines, and more particularly toa combined cuttingv and punching machinehaving novel means for operating the cutter or punch independently of each other. v

The primary object of the invention is to provide a devicerof this characterwherein the operating means is' so constructed to increase theleverage of the operating handle lto cause the tool to be operated with the minimum amount of exertion on the part of the operator.

A further object of the linvention is the provision of an operatingmeans which includes comparatively few parts, andl one which-may be readily and easily dismantled to repair the same, or sharpen the tools operated thereby. l Y, j

With the foregoing and other objects in view which will appear-'as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scopeof what is claimed, without departing from the spirit of the invention.

Referring to the drawing :i-

Figure 1 illustrates a side elevational view of a machine constructed in accordance withv the present invention;

Y'Fig. 2 illustrates an end elevational view disclosing the punching mechanism of the machine; Y Y t Fig. 3 illustrates a sectional view taken on line 3 3 of Fig. 1. j

Referring to the drawing in detail, the device is shown as including a body portion which comprises spaced side walls 5 and 6, each of which has its lower extremity provided with a flange 7 which is apertured to accommodate the securing bolts 8, by means of which the device may be secured and supported in an upright position.

The side walls 5 and 6 are supported in spaced relation with each other by means of the spacing blocks 9 andlO, which are diswhich'is of Va thickness to operate between i the side walls 5 and 6 of the body portion, and which movable member carries the punching element on one edge thereof, while the cutting element is carried on the oppositeedge thereof.

wSupported on vthe side surfaces of the movable member 12, adjacent to the upper endl thereof are therack bars 13 and 14:, which are disposed on opposite sides of the movable member 12, the lower edge of each of these rack bars being curved downwardly as Aat 15 to provide-camming surfaces for purposes to vbe hereinafter more fully described. Y

The pivoted arms 16` and 17 have connection with-the side walls ofthe body portion to permit the same to move transversely of the bodyportion, the rollers 18' which are carried by the respective arms being adapted to move over the camming surfaces of the rack bars to cause a movement of the movablemember 12 longitudinallyof the body portion. Y

Pivotally supported between the upper ends of the arms16 and 17 is a segmental rack carried by the lower end of the operating lever 18, the rack being indicated by the reference character 19, and so disposed that the same will coperate with the teeth of the rack bars 13 and 14, so that when the operating lever 18 is operated, the arms 16 and 17 are moved transversely of the body portion, thus causing the rollers 18 to move over the camming surfaces of the rack bars to move the movable element of the machine longitudinally of the body portion.

Formed in opposite edges of the body portion of the machine, are the cut out portions 2O and'21, there being a supporting block 22 positioned between the side walls 5 and 6 of the body portion, adjacent the cut out portion 21, which supporting block is apertured as at 23 to accommodate the punching element 24:, carried by the movable element of the machine, the punching element being constructed to operate on metal positioned in the cut out portion 21.

A cutting surface 25 is formed on the movable member, Y and this cutting surface coperates with the cutout portion 2O of the body portion to cutmetallic bars or the like,

which may be positioned in the cutjout lpor-1 tion 20.

From thefforegoing it is obviousv that,

when the o eratinv lever V18 is moved in one direction, the rollers 18" are-moved over theV YGaming surfaces of the rack bars `to cause the operation"V of the movable `member to accomplish the: purpose of; the machine.

Having thus described the inventiomfwhat ,is claimed as new is 3 1. 'In a Vmachinel ofl the ClassddeSCribed, a body'portion includingspace'd walls, the .op`

l posits-edges V(S- said walls' having cutout portions, apmovable member 'operatingbe tween thewalls",Vr said movable member car rynga punching element-Lon; one ofits edges, a knife carried on-the oppositegedge thereof, rack bars carried at the upper endY ofthe movable member, a `'segmental rack coperating with the rack bars, pivoted arms for supporting the segmental 'fra'ck, said segmental rack ada-ptedV to 'move the pivoted.

armsla'terally -of the body portion, and rollermeans carried by the. arm md adaptd to, engagefthelowerportions of the racl'c .tudinally of the body portion.

bars for moving the'movable member longi- 2..In a machine fof he class described, a body-portion including-spaced walls, af movable member operatinglin the body portion, a punchingelement carried'by the movable member, abutting'element carried bythe body, rackbars carried by the movable mem-V Y ber, pivotedf-meanscooperating with the rack bars `Yfor: moving"A thefrackbars and movable element longitudinally of the body Y portion, and said pivoted -vmeans adapted to move transversely of the body portion.

, 3.111V a machine of the' class'described, a body portion'including spaced Walls, a movable member operating between' the spaced walls, VrackV bars carried by the movable member, said rack 'bars having 'camming surfaces Jformed on the underside thereof, a punch and a cutting elementcarried bythe movable member,Y pivoted armsca'rried by the body portion,5means cooperating with 'the teeth ofthe rack bars' forl moving the arms,

transversely of the body portion, and'means carried by the arms andfcoeperating'yvith the camming surfaces of the 'rack bars, rfor movingthe movable member longitudinally of thebodyportion( l f4. In a machine' oftheclass described, a .f bodyportion including spaced walls, afinov.-V 'able member operating between Vthe'spac'ed walls, rackbars carriedY byfthe movable member, a `segmental,rack cooperating with 'FRANK'.'ERDMANJ -cuttingand punchingielement' carried' by the e the rackbarapivoted arms having connection Awith the vbody portion,` andadapted toV support the segmental rack, means carried j kby the arms andfcoperating* with the moveV able member for moving the movable member

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