US472107A - Charles joseph colling - Google Patents

Description

(No Model.)

^ C. J. GOLLING.

METAL SHEARS.

No. 472,107. Patented Apr. 5, 1892.

wir" mm" I u auw Il I/ UNITED STATES PATENT EETCE.

ROBINSON da CO.,

OF SAME PLACE.

lNI `ETAL-SHEARS.

SPECIFICATION forming part of Letters Patent No. 472,107, dated April 5, 1892. Application iiled August 7, 1891. Serial No. 401,997. (No model.)

To all whom it may concern:

' Be it known that I, CHARLES JOSEPH CoL- LING, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Metal-Shear, of which the following is a specification.

This invention relates to metal-shearing y machines; and the object of the present invention is to provide shears in which theleverage exerted along the entire cutting-edge of the shearing-knives is equalized, thereby placing the strain equally4 upon both shearingblades, and to so place the point of pivot of the swinging blade nearer the'line of cutting, and thereby prevent dragging of the shears over the material to be out, and thus avoiding the liability of breakage; and it has for a further object to provide shears in which the springing of the same when pressure is exerted upon the levers to cut the metal therein is entirely avoided; and with these and other objects in view the invention consists of the combination, with the ordinary stationary and swinging shears, of a metalcutting device and the specially constructed and arranged bearing-point or point of pivot Aof the swinging shears and the strengthening and retaining hook, all of which are constructed and arranged in the novel manner hereinafter more fully described, illustrated'4 in the accompanying drawings, and specifically pointed out in the appended claims.

In .the accompanying drawings, Figure 'lisr a front elevation of a metal-shearing machine constructed in accordance with my invention. Fig. 2 is a transverse sectional view of the same on line x a: of Fig. 1.- Fig. 3 is a transverse sectional view of thesame on line y y of Fig. 1.

Referring to the accompanying drawings, A designates the base-block of the casting and is provided with the ledge or flange a and a head-block B, which are integrally cast to each other, and between said head-block and baseblock is formed the usual opening, within which are located the shears, and which is adapted to admit'the insertion of the article to be cut. Upon said ledge or liange is seated the stationary shear-holder C, provided with the slots o and the depending perforated lugs c', the said slots or slotted perforations c being adapted to receive the bolts c2, that are adapted to pass through said shear-holder and `said ilange, and thus rmly secure said holder Said shear-holder is further provided with thev upwardly-extending side ange c5, to the side of which is secured by means of suitable bolts the stationary shear D, which, being rigidly secured to said holder, is laterally adjustable to secure the adjustment of the blades desired. The said head-block B ris provided along the side adjacent to the said ledge or flange of the base-block with the recessed portion h, which is designed for the reception and Working therein of the swinging shear, and is further provided at the inner terminal of said recess with a semicircular recessed bearing portion h', which is designed for the reception of the swinging shear-holder E. The swinging shear-holder E is provided at its inner end with an enlarged circular portion e, that is adapted to t snugly within the bearingrecess h at the inner terminal of said headblock, and said bearing end of the swinging shear-holder is provided with a segmental slot e', that is designed to work over the stationary pivot-bolt F, eccentrically located within said bearing-recess, and by this connection it can be readily seen that the strain upon the swinging shear is not directly placed upon the pivot thereof, which is usually centrally located at the inner end of the shear, but the whole strain is equally divided upon lthe pivot-bolt working in the segmental slot,

which also serves the function of a guide-- bolt, and the semicircular recessed bearing portion in the head-block, and which construction also allows for an easy and an effective operation. The said shear-holder is provided with a longitudinally-recessed portion e2 along one edge thereof, that is designed to accommodate the removable shear G, adjistably secured therein by means of the screws g. Theouter end of the head-block IOO B is bifurcated, as at Il, within which is pivoted upon the boltl the lever-socket J, which is designed to accommodate the end of the operating-lever K, which controls the swinging shear. Connecting-links L are pivoted to opposite sides of said lever-socket and to the outer free end of said swinging shear-holder, thus providing a connection between the operating-lever and the swinging shear-holder, by which a powerful leverage may be obtained and exerted.

The Width ofthe insertion of the metal between the shear-blades is regulated by the adjustable gage or stop M, which is laterally adjustable upon its securing-bolt m, Within the longitudinal slot fm', located in the headblock B, and extends down to Within a short distance from the top of the stationary shearholder and shear, and thus prevents the metal being inserted too far Within the machine, and the width of cut, according to the material used, may be thus readily regulated. The length of cut is also regulated by means of the transverse stop or` gage N. The said transverse gage N is provided with a longitudinal shoulder n, within which the ends of the metal to be cut are designed to rest, and is further provided With a perforated shank n', which adjustably engages the laterally-adjustable carrying-rod O by means of the set-screw n2 passing through said perforated shank and engaging said rod. The said rod is laterally adjustable within the perforation 0, transversely located in said base-block in the portion of the flange upon which the stationary 'shear-holder and shear are secured, and is itself laterally adjustablefas described, and held in any desired position, according to the length of cuts desired to be made, by means of the set-screw o', workinginto said perforation and biting said rod transverse adjustable Within the perforation in the flange of the base-block on which the adjustable stationary shear and shear-holder are secured.

In order that there may be no springing of the shears or displacement of the parts of the machine during the operation of cutting, I provide the device with a strengthening and retaining hook P, used for retaining the various parts of the machine in their normal position, as described. The said hook is pivoted upon the outer end of the pivot-bolt I, pivoting the lever-socket Within the bifurcated end of the head-block, and, extending down and spanning the opening between the head and base block, terminates in an engaging shoulder p, that is designed to take under the outer end of the portion of the base-block directly beneath the stationary shear-holder and shear. Thus, as can be readily seen, the tendency to springing and straining the parts is avoided by placing the strength equally upon the front strengthening-hook and the rear point of pivot of the swinging shear.

The construction and operation of my improved shearing-rnachine are thought to be apparent without further description.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

l. In a metal-shearing machine, the combination, with the base-block and the stationary shear thereon, of the head-block provided with a recessed portion having at its inner terminal a semicircular bearing-recess, a swinging shear provided with an enlarged semicircular end that is designed to fit and work within said semicircular recess, and a segmental slot adapted to Work over the pivot-bolt eccentrically located in said recess, substantially as set forth.

2. In a metal-shearing machine, the combination, with the base and head-block and the stationary and swinging shear therein,of the swinging strengthening and retaining hook pivoted to the outer or forward end of said head-block and provided with a squared end or shoulder engaging beneath the eXtreme outer end of the bed of said base-block, substantially as set forth.

3. The combination, with the base-block and the stationary shear thereon, of the headblock having a semicircular bearing-recess, a swinging shear provided with an enlarged circular end adapted to fit and work within said semicircular recess and with a segmental slot adapted to work over the pivot-bolt cccentrically located in said recess, and the strengthening and retaining hook pivoted to the outer end of said head-block and providedv with a squared engagingshoulder that is adapted to engage the bed of said baseblock directly beneath the stationary shear-holder and shear thereon, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto ai'lixed my signature in presence 0f two Witnesses.

CHARLES J OSEPII COLLING.

Vitnesses:

VINCENT SCHWAB, JAS. WILDER.

IOO

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