US1929625A - Calculating machine - Google Patents

Description

, Oct. 10, 1933.

L. P. CROSMAN CALCULATING MACHINE Filed'Nov. 22, 1932 s Sheet-Shegt 1 INVENTOR ing 1 Croslpan ORNEY Patented Oct. 10, 1933 PATENT oer-ice 1,929,625 CALCULATING Luring P. Crosman, Maplewood, N. .L, assignor to Gardner Company, Orange, N. J., a corporation of Delaware Application November 22, 1932 Serial No. 643,809

1 Claim.

The invention has relation to calculating machines, and more particularly to means for shuttl ing the carriage of a recording calculator back and forth between two laterally spaced positions.

The invention consists in the novel construc-' tionand combination of partsas set forth in the appended claim.

In the present disclosure, the inventionhas been shown as applied to a calculating machine of the type illustrated in U. S. Patent No. 1,867,002, issuedJuly 12, 1932 to Clyde Gardner, deceased, being utilized in this'machine to, shuttle the platen carriage and to provide for alternate registration on one and on another of two distinct registers.

In the accompanying drawings, illustrating the invention: v

Fig. 1 is a left side elevation of a calculating machine embodying the invention, with parts removed.

Fig. 2 is a detail elevation of the control mechanism shown in Fig. 1, the parts being shown in mid-cycle position #1.

Fig. 3 is a similar view, the parts being shown 25in mid-cycle position #2.

Fig. 4 is a rear elevation of the machine.

Fig. 5 is a detail elevation of the line space disabling means.

In machines of the present type, amounts set up in the keyboard are registered uponone or more register devices and are printed upon a record sheet, upon reciprocation of a rock shaft 301 (Figs. 1 to 3) operated from a crank handle or from equivalent motor drive devices. Automatic carriage shuttling mechanism must, therefore, operate to move the carriage in a given direction toward the end of a reciprocation of shaft 301', and to move the carriage in the opposite direction toward the end of the succeeding reciprocation of said shaft.

Shuttling the carriage For this purpose, a shifting lever 1 is fulcrumed at 2 on the framing of the machine and a control pawl 3 is mounted upon the forward arm of said lever, the pivot point 4 of said pawl being moved with the lever between two set positions. A spring 5 tends to bring an intermediate point 6 of the control pawl into an invariable position, and therebyto set the free end of the pawl to one of two different positions, according to the position of shfting'lever 1. This, however, is not the position of the rest of the parts, assumed at the end of a machine operation, at which 5 time pawl 3 is held by the operating roller '7 against the tension of spring 5, as seen in Fig.

' 1. Roller 7 is mounted on a crank arm 8 of rock shaft 301, and operates to move the shifting lever 1 differentially, under the control of pawl 3.

This differential action-may best be described in connection with two successive operations of the machine, during which operations the parts will act as follows:

As shaft 361 is rotated ina clockwise direction, as viewed in Fig. 1, roller 7 will move along the upper cam face of pawl 3, allowing said pawl to move slightly, under the influence of spring 5. As roller '7 moves past the end of, pawl 3, point 6 of the pawl will be centralized by spring '5, car'- rying the forward end of said pawl above the path of movement of roller 7, into the position shown in ,Fig. 2. Therefore, upon the return stroke of arm. 8 roller 7 will engage the lower cam surface of pawl 3 and will lift the forward end of the pawl. As shown in Fig. 2, however, a lug 9 on the rear end of the pawl is in engagement with the fulcrum stud 2-of lever 1, so that this return movement of arm 8 will operate pawl 3 and lever l as a-rigid unit, throwing lever 1 into its second position, illustrated in Fig. 3. An operation of the machine has now occurred, and the platen carriage has been shifted in a given direction, as will be later explained, and the forward end of pawl 3 is held in raised position by engagement of the roller 7. An arm 8 swings forwardly during the second operation of the machine, the roller '7 will move down the lower cam surface of pawl 3, and as it passes beyond the end of the pawl, the latter will snap downwardly into the position illustrated in Fig. 3, and the upper cam face of the pawl will be brought into the path of movement of roller '7. Lug 10 of pawl 3 is now in engagement with the fulcrum stud 2 of lever 1, so that in the return movement of arm 8 pawl 3 and lever 1 act as a rigid unit, and the lever is returned to the position shown in Fig. 1.

Shifting lever 1 is extended by a link 11 and lever 12 (Figs. 1 and 4), the latter being fulcrumed to the framing at 13 and having its work arm provided with a lug-14 lying between two spring pressed jaws 15. A lever 16, also fulcrumed at 13 is providedwith a lug 17 lying between the jaws 15, link 18 being pivoted upon the work arm of said lever,-and having a rearwardly bent portion 19 engaging a notch of the horizontal flange of a frame bar 20 of the platen carriage. The free end of link 18 is supported by engagement of a roller 21 of said link in an elon-- gated slot of the frame of the machine.

The above-described mechanism rovides a resilient connection between the shifting lever 1 and the platen carriage, lever 12 moving in unison with lever 1 and lever 16 following the movements of lever 12 because of the action of the spring jaws 15. This provides for a more satisfactory movement of the carriage than would be obtained by a rigid connection of the carriage to the shifting lever, and the action is further improved by the employment of means providing for an exact positioning of the carriage without undue strengthening of the spring of jaws 15. The locator comprises an arm 22 pivoted at 28 upon the main frame of the machine and having two cam walled notches 24 adapted to register with the roller 21 of link 18. Arm 22 is held in engagement with roller 21 by means of a spring 25, this spring being of suflicient strength to position said roller at the bottom of the notches 24. In order that spring 25 may not interfere .with the movement of the carriage from one laterally shifted position to another, lever 12 is provided with a roller 26, normally lying in one or the other of two cam walled notches 27 of arm 22. As lever 12 is moved from normal position to shift the carriage, roller 26 will cam the arm 22 against the tension of spring 25 and release roller 21 from the notches 24. At the end of the shifting movement, roller 26 will fall into the opposite notch 27 and the cam wall of a notch 24 will centralize roller 21.

Alternate register selection In order that items printed in the right hand carriage position may be accumulated in a given register, and items printed in the left hand carriage position may be accumulated in a separate register, it is providedthat the means for shuttling the carriage shall also select the register to be operated.

The Patent No. 1,867,002, hereinbefore referred to, shows two registers, each capable of being disabled by a rotarymovement of the register shaft, whereby appropriate cams engage bearings, and force the related register out of meshing position with the actuator segments. The details of this mechanism are of no importance in relation to the present invention, it being necessary merely to say that when a register shaft 403 stands in a given angular position, the related register will be in position to accumulate, and when said shaft stands in a second angular position, the register will be thrown out of action.

To control the angular position of shafts 403, crank arms 28 (Figs. 1, 2 and 3) of said shafts are connected by links 29 with a cam plate 30 pivotally connected to shifting lever 1 at 31. With the parts positioned as in Fig. 1, it will be noted that the upper link 29 has been pulled rearwardly, and the lower link pushed forward. When lever 1 is thrown into its opposite position, however, the opposed cam surfaces of plate 30 will be shifted with relation tothe path of movement of roller so that upon the return movement of arm 8,

id roller will engage one of these cam surfaces and rock plate 30 about point 31, to change the position of crank arms 28 and thereby change the register to be employed during the next opera tion of the machine.

Line spacer control the line spacing means is adapted to be operated at every second operation of the machine, that is to say two printing operations will occur, one in the right hand column of the record sheet and the other in the left hand column thereof, on each line of the record.

The line spacing means comprises a ratchet 820, secured upon the platen 891, a pawl 814, carried on a swinging arm 815 and a frame 818 pivoting about point 819 and connected with arm 815 by link 816. A ball extension 216 of frame 818 is supported upon a roller on an arm 396 which is reciprocated during each operation of the machine, movement of said arm away from bail 216 allowing the bail to drop under the influence of a suitable spring, this movement being transmitted through the train above-described to the platen 891.

For preventing the dropping of bail 216 and line spacing of the platen 891, a latch 214, pivoted upon the frame of the machine at 215 is urged by suitable spring into position underlying said bail, this being the position of the parts when lever 1 is in the position illustrated in Fig. 1.

When lever 1 is moved to its opposite position, however, a lug 32 of said lever will contact with a finger 33 (Fig. 1) and will thereby rock a lever 210 (Fig. 4) the end of which lever will cam the latch 214 from beneath the bail 216, so that the line spacing mechanism can function.

ShuttZing-non-shztttling adjustment Alever 34 is provided, having extension through the casing of the machine, said lever being movable. from the shuttling position, illustrated in Fig. 1 into position to disable the shuttling mechanism and leave the machine capable of operation in non-shuttling manner.

Lever 34 is fulcrumed in the framing of the machine at 35, and has a lower arm provided with a shoulder 36, adapted when the lever is moved counter-clockwise as viewed in Fig. l to engage in front or in rear of a roller 37 of pawl 3, according to the position of lever 1. This engagement of shoulder 36 will prevent movement of the pawl 3 into its opposite position, so that there will be no movement of this pawl when roller 7 leaves the end thereof and during the return movement of arm 8 roller '7 will return upon the same side of pawl 3 and the adjustment of lever 1 will not be changed.

Lever 34 is also provided with a lug 38 overlying the finger 33, and acting to hold said finger in depressed position, so long as lever 34 is in non-shuttling position, whereby the line spacing means is freed from the disabling means, and will operate at the end of each registering operation of the machine, in the usual manner.

I claim:

In a calculating machine having a transversely shiftable carriage; a pivoted spring urged loca- .tor adapted to position and hold the carriage

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