US1319411A

US1319411A - A eirm composed

Info

Publication number: US1319411A
Authority: US
Publication date: 1919-10-21
Anticipated expiration: 1936-10-21

Description

C. H1 NELSON.-

PUNCH PRESS.

APPLICATION 11150 1111113.11119.

Patented Oct. 21, 1919.

2 SHEETSSHEET l.

.C. R. NELSON.

PUNCH PRESS.

APPLICATION FILED JAN. I3. |919.

L ,3 l 9,411 Patented Oct. ZI, 1919.

2 SHEETS-SHEET 2.

UNITED STATES PATEN T OFFICE.H

CHARLES RUDOLPH NELSON, or CHICAGO, ILLINoIs. AssICNoR ro e. n. a w. A. NELSON,

or CHICAGO, ILLINOIS, A FIRM eoiurosnn WILBUR A. NELSON.

or snip CHARLS IeUnoLrH NELSON AND PUNCH-rieuse. Y

patent-ea Voet; 2,1, 1919.

Application led January 13, 1919. Serial No. 270,874.

To all whom it may concern:

Be it known that I, CHARLES RUDOLPH NELSON, a citizen of the United States, andy resident of Chicago, county of Cook, and

State of Illinois, have invented certain new and useful Improvements 1n Punch-Presses,

of which the following' is a specification,

and which are illustrated in the aecompanying drawings, forming a part thereof.

The invention relates to punch presses and especially to those having a plurality of removably and'adjustably held punches adapted for simultaneous operation in a variety of different arrangements with lrespect to their number and spacing. It is well known Vthat in the punching of sheets for use in some forms of loose leaf binders, as for example, certain kinds of ledgers and transfer binders, a less number of ling apertures or notches is required in some of the sheets than in others, although the spacing of the smaller number of apertures `must be the same as Athe spacing of the corresponding apertures in the `sheets provided with the larger number. The invention accordingly contemplates a punch vpress having aV series of removably held punches with provision permitting the removal or addition of punches intermediate the ends of the series without disturbing the spacing adjustment of those which remain.

The object of the invention is `to provide an. improved -press for punching paper sheets and the like, the feature of improvement residing in the manner in which the cooperating parts of the punch are held in corresponding parts of the' press.

In the accompanying' drawings Figure 1 is a front elevation of one form of punch press embodyingthe feature of improvement provided by the invention;

Figs. 2 and 3 are detail perspective views, Fig. 2 showing one ofthe punches with some parts broken away and Fig. 3 showing an end portion of the cross head of the press;

Fig. 41 is a side' elevation of the punch press, partly in section, the plane of section being indicated by the line 4-4 on Fig. 1'; and

Fig. 5 is a detail plan sectional view taken on the line 5 5 of Fig. 1.

`The drawings show an upright punch press comprising a stationary table V over which is mounted a vertically movable cross head 11. The cross head 11 is guidedly held in a slideway 12 formed upon the end of an oif'erhanging bracket arm or standard 13 and a drive shaft 14 is journaled in `the standard 13 over the said slideway.

Actuation ofthe cross head 11 is accomplished through a link 15 which has its vlower end pivotally connected to the cross head atl@ while the upper end of the link 15 is engaged with an eccentric 17 mounted on .the drive shaft 1,1. Y

Inasmuch as the punching of a quantity of sheets with a variable number of filing` apertures or notches at each.' downwar `thrust of the crossrhead 11 is contemplated, a pluralityrof separate punches, as 18 (Fig. 2) are preferably provided. As shown, each punch 18 is of well known construction and `comprises a die block, generallydesignated 19, and a plunger 20. The' die block 19 in turn comprises the base'21 having the die aperture 22 and the body portion 23 in which the plunger 20 is slidingly mounted, thebase 21 and .body portion23 heilig permanently connected. ,The plunger is formed with the usual enlarged headj24. j p v,

During the Voperation of the press, the required number of the punches 18 are y mountedtherein with the upper surface of the base portion 21 of each y gers 20 with the cross head 11 should serve for the positive actuation ofthe plungers by the cross head in both directions and the invention contemplates that this may be accomplished while nevertheless permitting the separate removal of any of the punches 18 without disturbing any of the others.

In the arrangement shown, all of the punches 1S are disposed in a row or series for engagement with the sheets in a straight line adjacent one edge of the same. Pref* erably the die block 19 of the several punches are held upon the table 10 by separate clamps. As shown, the baseunember 21 of each dieblock 19 is formed with

chamfered ends

25, 26, and kthe table .10 is grooved to provide a the said base members, the forward edge ofV depressed seat 27 for the groove being undercut to form an overhanging shoulder 28 for engagement with the chamfered forward ends 25 of vthebase members. Near the rear edge of the seat slot 29 for receivin the head of a clamping bolt 30 by whici a separate 21 of each die block 19. several punches 18 -v plished by providing the said cross head with a groove 32 upon its underside. This groove preferably extends continuously throughout the width of the cross head and the enlarged heads 24 of the plungers 2O enter the said groove in accordance with the location of the die blocks 19 upon the table 10.

Positive actuation of the plungers 20 dur- Y ing the upstrokes of the cross head 11 is accomplished by the use of

plates

33, 34, whicnare carried by the cross head and extend under the,I enlarged heads form of a T parting to the groove 32 the as 34,'may be slot. One of the said plates,

j permanently held in position against the l plate 33 is turned lugs,

' holding the plate 33 'Y Independent removal of any corresponding part of the cross by set screws 35.

head 11, as

of ,the punches 18 '1s permitted by the withdrawal of the plate 33 from beneath the enlarged heads 24 of the plungers 20. For this purpose the plate'33 '1s preferably hingedly connected to the cross,head11. As shown, the

,two ends of the plate 33 are upturned, as at 36 (Fig. 3) and each of these two end portions ofrthe plate'is pivotally attached to the corresponding end of the plunger, as by a screw stud 37. Intermediate its ends the formed with a plurality of upas 38, V39, extending along one The lugs 38 are norclamping bolts 40 for against swinging movement. Each of the lugs 39, on the other hand, is aperturedand is normally engaged with a short stud 41 fixed in the adjacent face of the cross head 11 to prevent downward deflection of the plate 33 intermediate its ends.

In some instances it may be desirable to punch some of the sheetsA to ,be used in a loose leaf ledger with a series of four filing apertures extending in a row along one edge of the .sheets while other sheets are to be of` the same.

edge

engaged with mally Copies of this patent may be obtained for five punched with only 24 of the plungersy from opposite sides of the same, thereby im cents each, by addressing the two apertures Vcorresponding in spacing with the two apertures at the ends of 'the row in the first mentioned sheets. Vith the apparatus provided by the Y invention the punching of both sets of sheets is readily accomplished for any of the punches 18 may be inserted or'reinoved without disturbing the adjustment of the others. For this purpose it is only necessary to withdraw the clamping bolts 40 to permit outward swingingof the plate 33 and adjust the corresponding clamping bolts 30.

I yclaim as my invention 1. In a punch press, in combination, a cooperating table and reciprocating cross head, the said cross head being formed with a T slot the throat of which faces the table and which T slot extends continuously throughout the width of the cross head and thatl part of thel cross head which dconstitutes one of the side walls of the throat of the T slot being movable to permit opening of the said throat, a plurality of separate punches each comprising a cooperating die block and plunger, the plunger of eachV punch being formed with an enlarged head adapted to enter the T slot of the cross head through its throat when open and to be held therein when ;the throat is closed, and separate clamping means for removably attaching the die block of each punch to the table.

2. Ina punch press, in combination, a-

there being a slot in its bottom near its op-v posite side, bolts anchored and slidable in said slot, the die blocks increasing in dimension toward their bases, the forward end of each being adapted to underlie the forward edge of the groove, and members abutting against the rear edge of the groove and against the rear ends of the blocks and pressed against each by nuts von said bolts.

3. In a punch press, in combination, a table havingy a groove, the front edge of which is under cut, there being a slot inv thel bottom of the groovenear its rear edge, a bolt longitudinallyslidable and anchored in said slot, a die block decreasing in length from its bottom upwardly, its front end adapted to underlie the front edge Of the groove, clamping means having an opening to receive said bolt and adapted tov abut against the rear edge of the groove and against the rear end of thel die block and a nut on said bolt.

HARLES RUDOLPH NELSON.

Commissioner of Patents,

Washington, D. C.