US848869A - Perforator. - Google Patents

Description

No. 848,869. PATENTED APR. 2, 1907;

HENRY UPTON, OF GANANOQUE, ONTARIO, CANADA.

PERFORATOR.

Specification of Letters Patent.

ratenteci April 2, 1907.

Application filed June 28, 1905. Serial No. 267,436.

To @ZZ lah/om, it may concern:

Be it known that I, HENRY UPTON, of Gananoque, Province of Ontario, Canada, have invented certain new and useful Improvements in Perforators; and l do hereby declare that the following is a full, clear, and exact description of the same.

My invention relates particularly to perforators for perforating papers to make them ready for filing, although the main features thereof can be applied with advantage to any type of perforator.

The invention may be said briefly to consist, primarily, of a pair of axially-movable punches having cancave cutting ends and secured rigidly together to move in unison by a bar adapted to be moved in one direction to make the punches perform their function and in the opposite direction to return the punches to their normal positions. Secondary features are a lever of particular construction for operating the punches and receptacles with a movable closing-plate and a gage, all of which, with the perforating mechanism, are mounted on a common portable base.

For full comprehension, however, of my invention reference must be had to the accompanying drawings, forming a part of this specification, in which similar reference c haracters indicate the same parts, and wherein- Figure l is a top view of my improved perforator. Fig. 2 is a vertical sectional view taken on line A A, Fig. l. Fig. 3 is a similar view to Fig. 2, taken at right angles thereto on line B B, Fig. l. Fig. 4 is a detail perspective view of one of myimproved punches, and Fig. 5 is a plan view of the under side, of my improved perforator.

Each of my improved punches consists of a short round bar b, with a concavity c, semicircular in cross-section, in one end and eX-v tending diametrically across the same, thus forming a pair of cutting-blades d d, with intervening shearing edges e. These punches are connected rigidly together to move in unison, but act alternately, by a bar f, having its ends securely fastened in perforations therein, the point of connection to one punch being located a greater distance from the cutting end thereof thanthe point of connection to the other punch is from its cutting edge. l

A pair of brackets g are secured upon a bed-plate 7i and have guiding portions i in line with a pair of circular perforations in the bed-plate equal in diameter to the punches, which are guided in the brackets, and the connecting-bar f is accommodated by slots in the sides adjacent to one another of the guiding portions of the brackets.

My improved punches are operated through the medium of the connecting-bar by means of a U-lever m, fulcrumed near the ends of its legs upon a bar n, mounted rigidly at its ends in the brackets, while such ends are concaved at one corner, as at n, and adapted to project beneath the bar f when the lever m is thrown back.

The bed-plate, with the parts carried thereby, is secured by screws 0 or other means to the top of a preferably wooden base p, having a pair of openings Q in line with the perforations y' and closed at their lower ends by a plate r, pivoted near one end, as at s, to the under side of the base inline with the openings y', over the mouths of which such plate is adapted to be swung. This plate has its free end turned down, as at t, to facilitate moving the same, and it is formed with a slot u, concentric to its pivot and adapted to engage and be supported by a screw o in the under side of the base. A series of preferably india-rubber feet raise the base sufliciently to accommodate the plate and keep the same from scratching any surface upon which the device is set. An edge-guide, consisting of an oblong plate w, longitudinally slotted, as at x, and with one end turned up, serves to gage the distance from an edge of the sheet to beperforated, the perforating is to be done.

Operation: The sheet or a quantity of them are inserted beneath the overhanging guiding portions of the brackets, and the lever is then swung over the connecting-bar of the punches and depressed, thereby forcing the latter downwardly through the guiding portions of thebrackets until the punches one after the other enter the holes in the bedplate. The action which takes place is that the rounded blades d first start the cutting operation, and they are followed up with the shearing action of the intervening shearing edges e relatively to the walls of the holes in the lbed-plate. To return the punches to their normal positions, the lever is swung away from the barf, thus bringing the concaved corners or sides of the ends of the legs of the lever beneath the barand raising it,

and consequently the punches, out of cutting position, thereby releasing the perforated sheets.

lVhat I claim is as follows:

l. A perforator comprising a pair of punches, a bar connecting such punches rigidly together, means whereby the punches are guided, means independent of the said bar and rigidly supporting a ulcrum-bar adjacent to the guiding means, and a lever fulcrumed a short distance from one end upon the fulcrum-bar, and adapted to at times have its short end project beneath and bear upwardly upon the first-mentioned bar and at other times have its long end ride the said bar, for the purpose set forth.

2. A perforator consisting of a bed-plate having a pair of holes therein, a pair of punches consisting of round bars equal in cross-section to the diameter of the holes in the bed-plate and each having one end diametrically concaved, a bar connecting such punches rigidly together, means whereby the punches are guided, and means rigidly supporting a fulcrum-bar adjacent to the guid- -ing means, and a U-lever fulcrumed a short distance from its ends upon the fulcrum-bar and adapted to, at times, have its short end project beneath and bear upwardly upon the Erst-mentioned bar and, at other times, have its long end ride the said bar, substantially as V described and for the purpose set forth.

3. A perforator consisting of a base having a pair of openings therethrough, a bed-plate secured to the top of such base and having a pair of perlorations in line with the openings in the base, a pair of guiding-brackets mounted rigidly upon the bedplate, a pair ol punches having concave lower ends, and guided in the guiding-brackets, a bar rigidly connecting the punches together, a U-lever fulcrumed a short distance from the ends ot its legs to the pair of brackets, and adapted to, at times, have its short end project beneath and bear upwardly upon the first-mentioned bar and at other times have its long end ride the said bar, a plate pivoted to the under side of the base and adapted to extend across and close the lower end of the openings therein, substantially as described and for the purpose set forth.

In testimony whereof l have signed my name to this specification in the presence of two subscribing witnesses.

HENRY UPTON.

Vitnesses' MAY B. J oHNsroN, FORD FETCH.

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