US1023841A - Key mechanism for calculating-machines. - Google Patents

Description

if. GABER.

KEY MMHANISM Ffm GALCULATIEG MACHINES.

PI'LIGTION FXL'QD DEG. 26. 1911.

1,023,843, mmm Ap@ -IIIIXIKI JULiUs GRABnip/or nnwyoex, N. Y.

KEY MEGHANISM FOR CALCULATING-MACHINES.

Specification of Letters latent.

Patented Apr. 23, 1912.

Application filed December 26, 1911. Serial No. 667,576.

ticularly comprising novel and effective means. for temporarily locking a depressed key in its lowered position, and for .automatically releasing said key 'upon the depression of another key of same row.

Additional novel means are provided for vsimultaneously releasing all depressed keys of the various rows if desired.

In the accompanying drawing: Figure 1 is a vertical section through part of the 4which passes loosely key mechanism. showing 'one row of keys, Fig.2 a -bottom view partly broken away of the mechanism; F ig. 3 a vertical section on line 3-3, Fig. 1; Fig. 4 a vertical. section on line 1.--4:, 3, and Fig. 5 a detail of the key connecting means.

The keys A10 for actuating the ciphering mechanismof the calculating machine are arranged in parallel rows, each row containing-nine'keys-as fully illustrated and described in a oopending patent application tiled by me October 21st, 1911, under Serial No. 655,954,y The keys of .each row are adapted tofw co "perate with a shaft 11 which Acarries a'plurality of axially slidable toothed sectors 12,10ne sector being provided for each key. The several sectors 12 contain different fn'umbers'of teeth according to the keys with which they ai'e coperable. Upon their axial displacement, sectors 12 are adapted to engage toothed wheels 13 rigidly secured to a shaft 14, the parts 11, 12, 13, 111 being duplicates of the parte 1a, 30, 31, 32

described in the copending patent application hereinabove referred to.4 Shaft 14. is operatively connected' to the ciphering mechanism proper, which is fully disclosed in my above cited Patent No. '972,360.

Each key 10 has a depending shank 15' through a correspondin aperture of the machine top 16. To sliank.15 is fulcrumed one arm of a two-arm lever 17 "pivoted at 18 toni-a Web"19 depending from top 16. The other arm of lever 17 carries a pin 20 which is received within a corresponding slot 21 of the substantially horizontal shank of a 'T-shaped lever 22. To the upper arm of the latter is connected a spring 23, While its ylower armis provided with a knob 24, which engages the groove 25 of a ycolla-r 26 .firmly secured to the ad- `ioining sector 12. Springs 23 areso fastened to web 19 as to turn the lower arms oflcvers 22 to the left (Fig. 1) and thereby raise shanks 15 until their abutments 27 engage top 16. In this position of the parts,

. sectors 12 are shifted out of alinement with their respective wheels 13 and thus rendered inoperative when shaft 11 is rotated, motion being transmitted to shaft 11 from a manually operated shaft 28 through miter wheels 29.

l In close p\roximity to each shank 15, there is pivoted to web\19 at 30 an arm 31. At their free ends, arms 31 carry pins 32 which are connect-ed with each other by links 33, as illust-rated in Figs.'1, 2 and 5. Intermediate its arm 31 and links 33,'each pin 32 is adapted to be engaged by an angular projection or nose 34 formed on the adjoining key-shank 15, each nose having an upper horizontal pin rest 35. The pin 32 of the one-key 101 is accommodated within a corresponding bore of a shank 36 depending from a slide 37 which is held in. permanent engagement-with the lower side of top 16 by a guide roller 38. Shank 36 is engaged by a spring- 39 which tends to draw slide 3'? to 'the left (Fig. 1), in which movements all pins 32 participate.

As thus far described, it will be seen that upon the depression of any one key in a row,-

its nose 34 in engaging the coperating pin 32 will push the' latter together with the entire train. of links 33 to the right (Fig: 1), until said pin Iclears nose 34 and thereby permits spring 39 to return links 33 and pins 32 to their initial position. In this way, the rest 35 of the depressed key will be engaged by its pin 32, to prevent a rising of said key.'v Upon a depression of another key y the operation described will be repeated,

whereby the previously depressed key .will

be freed as will' be readily understood.

Slide 37 is substantially U-shaped as illustrated in Fig. 5, and has a forwardly extending iiiger .37 which is in permanentengagement with a transversely reciprocable bar 40. The latter isarranged 'in close proximity to the lower side of top plate 16 and is held in place by a pair of bell crank levers 4l fulcrumed to said plate at 42. One arm of each of these levers is slotted as at 43 for the reception of a pin 44 depending from bar 40, while the other lever arms are connected by a rod 45. One of the levers 41 is by link 46 connected to one arm of a two-arm lever 47 fulcrumed at 48. The other arm of lever 47 is perforated as at 49 for the accommodation of a pin 50 projecting upwardly from a rock shaft 51. This shaft is adapted to be manually or automatically oscillated Whenever it is desired to unlock the depressed keys, such means not forming part of the present invention.

It will be seen that upon an oscillation of shaft 51, pin 50 tilts lever 47 in the direction of arrow a (F ig. 2) and thereby bar 40 is advanced in the direction of arrow b, ci? igs. 1 and 2) to correspondingly shift sfide 37 and links 33 to the right (Fig. 1). is all pins 32 participate in this movement, the particular pin which had previously engaged the rest 35 of the depressed key 10, will clear said rest to liberate the corresponding shank 15, thereby permitting spring 23 to raise said shank yand key.

I claim:

l. In a device of the character described, a row ot depressible keys, a train of links arranged in proximity thereto, and means intermediate said keys and links for maintaining the keys in their lowered position.

2. In a device of the character described, a row of depressible keys, a train of links arranged in proximity thereto, pivoted arms engaging said links, and means intermediate said keys and links for maintaining the keys in their lowered position.

3. In a device of the character described, a row of d'epressible keys havin0 depending Shanks, noses on said shanks, pms adapted to engage said noses, and links connecting said pins.

4. In a device of the character described,

a row of depressible keys having depending shanks, noses on said Shanks, pivoted arms arranged in proximity to the Shanks, pins carried by the arms and adapted to engage the noses, and links connecting said pins.

5. In a device of the character descricd, a row of depressible keys having depending Shanks, noses on saidV Shanks, pivoted arms arranged in proximity to the Shanks, pins carried by the arms and adapted to engage the noses, links connecting said pins, and a spring operatively connected to said links.

6. In a device of the character described, a row of depressible keys having depending Shanks, noses on said Shanks, plvoted arras arranged in proximity to the Shanks, pins carried by the arms and adapted to engage the noses, links connecting said pins, a slide connected to one of the tlanking pins, and means for actuating said slide.

7. In a device of the character described, a row of depressible keys, a train of links varranged in proximityT thereto, means intermediate said keys and links for maintaining` the keys in their lowered position, and a spring-influencedslide operatively connected to one end of the train.

8. In a device of the character described, a row of depressible keys having depending Shanks; noses on said Shanks, pi'voted arms arranged in proximity to the shanks, pins carried by the arms and adapted to engage t-he noses, links connecting said pins, a spring-influenced slide connected to one of the flanking pins, and a reciprocative bar engaging said slide.

9. In a machine of the character described, a. casing having an apertured top plate, a row of depressible keys, shanks on said keys that pass through the plate-apertures, abutments on said shanks adapted to engage said top plate, noses formed on the Shanks below said abutments, and interlinked pins adapted to engage said noses.

10. In a machine of the character described, a casing having an apcrtured top plate, a ron of depressible keys, Shanks on said keys that pass through the plate-apertures, angular noses formed on said shanks and having rests, and interlinked pins adapted to engage said rests.

JULIUS GRABER.

Witnesses ARTHUR E. Znnrn, KA'rrrnnYNn Koen.

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