USRE16207E - Assigstob so moffisob calculgt - Google Patents

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Nov. 10, 1925- E. E. PHINNEY I KEYBOARD CLEARIfiG MEANS FOR CALCULATING MACHINES O'riginal'Filed arch 8, 192a z'sneexs-sneez 1 E. E. PH| NNEY KEYBOARD CLEARING MEANS FOR CALCULATING llACflINlS Nov. 10, 1 925- 2 Sheets-Sheet 2 Original Filed March 8, 192g Reissued Nov. 10, 1925.

UNITED STATES PATENT- OFFICE;

EDGAR E. PHINNEY, OF SAUG'US, MASSACHUSETTS, ASSIG-NOR T0 MONROE CALCULAT- ING- MAGHINE CQMPANY, OF ORANGE, NEW JERSEY, A CORPORATION OF NEW YORK:

KEYBOARfi-CLIQARING MEANS FOR CALCULATING MACHINES.

Driginal No. 1,432,616, dated October 17, 1922, Serial No. 364,042, filed lilarch S, 1920. Application for reissue filed September 21, 1925. Serial No. 57,8112.

1 0 alt whom, it may concern:

Be it known that I, EDGAR E. PHINNEY, a citizen of the United States of America, and resident of Scngus, in the county of Essex and State of h'lasscchusetts, have made i certain new and useful Invention in 'Ke'eyboard-Clearing Means for Calculating Machines; and. I declare the following to be a full, clear, and erect description of the some, such asjwill enable others skilled in.

justing hey. Fi urc b a detail face "View of the re turn Key. Figure (l is a siinilarriewof the clear hey.

Figure 7 is a. detail side viewv of the adjusting and return keys and parts operated thereby in positions oojiosite to those shown in Figure 2.

The invention has relation to'mesns for uutormiticzilly clearing" the keyboards of calculating machines during the stroke or movement on operating member, said means being operative or inoperative according to the manual adjustment or setting of an element thereof, and an object of the invention is to provide improved lteycontrolled setting means. Other objects and advantages will appear.

The invention consists in the novel construction and combinations of ports, as herei nutter set forth.

In the accompanying drawings illustrat ing an embodiment of the invention as applied to machine of the general type of the patents to Baldwin (reissue) No. 13,841, and to Monroe No. 1,30,fi0-, the numeral 1, designates denominational keys arranged in o. plurality of banks or series, the stems 9 of said keys having upper notches 1i, and lower notches 8. A rock bar 4: having pres sure spring 6, extends parallel to each bank of keys, a lateral edge of said bar normally engaging the lower notches, and being adapted to engage the upper notches to retain the keys in setnp or depressed position against the tension of their springs 9.

Extending at right angles to the reels bars A} is an endwise slidablc or reciprocatory bar 12, common to all of the rock bars and having upstanding teeth 13 engaging laterally all of the rock bars and adapted upon endwisemovement thereof to move all of the rock bars out of engagement with the key stem notches, thereby releasing all depressed keys.

Means are provided to move the slide or bar 12 in one direction to release all depressed keys of the dilferent banks or series stated,.after the key-va1ue registration is completed, consisting of a double-beveled com member 18, loosely mounted upon the hub of gear wheel 76, with which the operrating member or crank handle has driving connection by means of a pin (see Fig. 1). Gear Wheel 76 has a pin 29, engaging either of diametrically opposite shoulders 80 of said cam member according to the direction of movement of the crank handle, and there by causing said member to rotate or move with said gear Wheel, one or the other of the beveled or com surfaces 17 of said member being thereby caused to engage one arm 16 of a vertically movable lever 14, said lever being fulcrumed upon pin 15, and in turn actuating shorizontally movable lever 21,

the latter engaging one end of and actuat ing to the nature of the problem being per formed, there being no clearing of the lreyboard in. the performance of multiplication or division Wlnichv consist of repeated addition or substraction operations.

Means are provided to so' move the lever 14 as a whole laterally upon its pivot pin, consisting of arepeat key 21, the stem of -of the key upwardly, rcturn said lever to normal position.

The repeat keyis moved upwardly or returned to normal position as stated, by means of a return key 35, engaging at its lower end at 35 one arm of a rock lever 34, the other arm of said rock lever having at 34' operating engagement with the lower end of the repeat key. The keys 21 and 35 have an operating movement corresponding to that of the denominational or numeral keys 1, that is to say. a single rectilinear movement, parallel to the movement of said numeral keys, whereby the key 21 is set to adjust the lever 14 to operative or inoperative position and to maintain it as adjusted, by engagement of the walls of the cam slot 30. I

Means are provided whereby upon partial depression of either the repeat key or the return key to move the rock lever 3% past central or intermediate position, the rock love and the key depressed are caused to automatically complete the full strokes thereof, consisting of a latch lever 38, one arm of which is' provided with a doublebeveled cam head 3'7, either beveled or cam surface of which (according to the direction of movement) is engaged by an anti-friction roller or stud 36 located at the lower end of a central downward extension of said ro'ck lever, thereby actuating the latch lever against the tension of its spring 39 during the first portion of the stroke of the ke depressed, until said roller has passed the point of said cam head, the spring of the latch lever then acting to return the same to normal position and engaging the other beveled or cam surface thereof with said roller and actuating the rock lever and the key de pressed to automatically complete the strokes thereof. In this way a quick touch upon the .repeat or return key will effect a secure setting orlateral adjustment of the lever 14 as stated. I

A clear key 22, operable at will, is provided with a longitudinal slot engaged by the tail arm of the lever 14, the upper wall of said slot in the depression of said key causing vertical actuation of said lever to clear the keyboard.

a depressible key having, a cam I claim 2- 1. In a key-set calculating machine, springretracted numeralkcys, means for retaining said keys in depressed position, an operating device, means coopcratmg with said operating device and capable of moving said retaining means to release said keys and clear the keyboard, including an element seltable to inoperative position, and a rigid unitary key capable of movement only in a single rectilinear path parallel with the path ofv movement of the numeral keys, directly engaging said element and settable by a single movement to adjust said element to inoperative or operative position and to automatically maintain it as adjusted.

2. In a key-set calculating machine, springretracted numeral keys, means for retaining said keys in depres-red position, an operating device, means cooperating with said operat ing device and capable ofmoving said retaining means to release said keys and clear the keyboard, including an element settable to inoperative position, and a key capable of movement only in a single rectilinear path parallel with the path of movement of the numeral keys, having a cam wall engaging said element and settable 'by a single movement to adjust said element to inoperative or operative position and to automatically maintain it as adjusted.

, In a key-set calculating machine, an

operating shaft, spring-retracted numeral keys, means for retaining said keys in depressed position, means for releasing the keys from said retaining means including a cam on said operating shaft and an adjustable lever, and means for adjusting said leverlongitiidinally of said shaft, into or out of contacting position with saidcam, including wall engaging said lever.

4. In a key-set calculating machine, an operating shaft, spring-retracted numeral keys, means for retaining said keys in de-" thep'ressed position, means for releasing keys from said retaining means including a cam on said operating shaft andan adjustable lever, and means for adjusting said lever longitudinally of said shaft, into or out of contacting position with said cam, including a depressible key having a slot formed with opposite cam Walls engaging said lever.

In testimony whereof I affix my signature, this 14th day of September, 1925.

EDGAR E. PHINNEY.

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