US988327A

US988327A - Electric cash-register.

Info

Publication number: US988327A
Application number: US37669907A
Authority: US
Inventors: Clarence B Foster
Original assignee: NCR Corp
Current assignee: NCR Voyix Corp; National Cash Register Co
Priority date: 1907-05-31
Filing date: 1907-05-31
Publication date: 1911-04-04
Anticipated expiration: 1928-04-04

Description

C. BQFQSTER.

ELECTRIC CASH, REGISTER.

APPLIGATION FILED MAY 31, 1907.

Patented Apr. 4, 1911.

4 SHEETS-SHEET l.

C. B. FCfiTHR,

ELECTRIC CASH REGISTER.

APPLIGATIQN FILED MAY 31, 1907.

l/Vwmwoco G. B. FOSTER. ELECTRIC CASH REGISTER. APPLICATION mum MAY 31, 1907.

Patented Apr. 4, 1911.

THE.

' ELEGTRIQG S REGISTER. APPLICATION FILED MAY 31; 1907.

Patents .4, 1911.

v g @f SHEET 4.

UNITED STATES PATENT oEE c CLARENCE B. FOSTER, F DAYTON, OHIO, ASSIGNOR TO THE NATIONAL CASH REGISTER COMPANY, OF DAYTON, OHIO, A CORPORATICN OF OHIO, (INCORPORATED IN 1SC6.)

ELECTRIC CASH-REGISTER.

Application filed May 31, 1987.

State of Ohio, have invented"certain new and 'usetul Improvements in Electric Cash- Reg1sters,*.ot which I declare the following to be a full; clear, and exact description.

This invention relates to improvements in recording machines and has more particular relation to that class of recording machines shown and described in pending United States application Serial No. 359,790, filed *IIFeb. 28, 1907 by Joseph P. Clealwherein a {plurality of banks or controlling keys are coach provided with a traveling rack bar,

electrically operated forward and backward a, predeteri'mned distance tosend a predetermined number 0t electrical. impulses to a 1 recording machine which is distantly located ing whereby the use of one wire besides acommon return wire will be sutlicient for any number of banks of controlling keys, whereas heretofore one wire foneach sepa rate bank has been considered the minimum in this class of machines.

Another object is to provide a system of relays in the main circuit to control a s0- called bank selector which is advanced step by step to set the recording mechanism so that the impulses from'each bank of con trolling keys will be utilized by it own individual receiving mechanism. I

With these and incidental objects in view the invention consists in certain novel features of construction and combination of. parts the essential elements of which are set forth in appended claims and a preferred form of embodiment of which is hereinafter described with reference to the drawings which accompany and form part of this "specification.

. anism, and 4 is adiagram of the electric Specification of Letters Patent.

.ing rack relays, will be operated.

Patented Apr. 4, 1911.

serial No. 35 6.699.

circuits. Fig. 5 is a top plan View of the keyboard. I

There is herein shown only a recording device but it is to be understood that it could very easily be converted into aregistering and indicating device or a combinationof all three and that the use of all of these species of accounting devices is regarded as 'vv'it-hin the scope of the invention.

In the drawings forming part of this specification there is shown. only one bank of keys and: devices operated thereby, but the wiring diagram excepting that. for the recording mechanism is shown applied to two banks, it being:understood that in practice a greater number will be used, all of which are however, exact duplicates of those shown.

Banks of keys are provided, the inner ends of which when depressed are adapted to be in the path of longitudinally sliding bars. The depression of my key of the bank serves to close a circuit through one of a pair of solenoid magnets which serves to drive the longitudinal bar referred to in one direction to an extent dependent on the key depressed. Vhen the desired movement has been. completed in one direction the circuitthrough the solenoid magnet as described is broken and a second circuit is made throuLh the other of the pair of solenoid magnets above referred to, which serves to return the longitudinal slide to its normal position when the second circuit is brokenin its turn. By means of a pair of make and. break con tacts operating with said longitudinal lidfe, impulses corresponding in number to thevalue of the key depressed are sent to the recording machine to be utilized to set the printing racks correspondingly.

To accomplish the object ofthis invention polarized relays are employed to operate the difi'erent devices in the recording machine. T he armatures of the relays which are used to operatethe printing racks and the motor switch. of the recording machine are polarizedfor the north pole and will be attracted by their relays when a current is. passed through said relays in one direction, but will not be attracted when a cn'r'rent otthe' reverse direction is used. The armature of the bank selector operating inagnet is polarized- 'for the south pole sov'that said magnet. when connected in parallel with th key depressed without adecting the bank selector magnet; then by sending a current of the reverse direct on-over the same lines (using the common return wire for the posi tive side of the battery) the bank selector magnet will be energized to operate the bank selector mechanism without afi'ect- I ing the printing rack relays.

Referring to Fig. 1 it will be seen that there is provided a bank of keys 10 numbered from one to nine inclusive which are adapted to be separately depressed and pins l1 carried thereby serve to move a detent 12 provided with slots '13 for locking the key in depressed position. To this end the detent 12 is mounted on parallel arms 1a and 15 pivoted to the key frame. The arm 15 has an arm 16 extending rearwardly from its pivot and adapted to be engaged by a bell crank latching pawl 17 to latch the detent 12 and the operated key in their operated position. The latching pawl 17 is pivoted to the frame of the machine and has on its rearwardly extending portion a laterally extending pin 18 which when a key is depressed will assume a position like that shown in dotted lines in Fig. 1.

Pivoted at 20 on an upward extension of a sliding rack bar 23 is a spring trip pawl having at its forward end a laterally extending beveled flange projection 19 and-- also having a downwardly extending heel 21 which abuts the edge of the upward extension of the rack 23. Between the heel 21 and V beveled flange 19 will cam the pin 18 downward and force the bell crank pawl 17 from under the projection 16 of the arm 15, thereby releasing the detent l2 and the depressed key, both of which will be restored to their normal positions by their respective springs. The heel 21 .on the return of the rack 23 abuts against the upward extension of said rack 23 and prevents the trip pawl from swinging on its pivot during the camming downward of the pin 18. The arm 16 of the arm 15 also serves to operate series of conpressed, the object of which will behereinafter explained.

The rack 23 is mounted and slides upon two pins 24 attached to the framework of the machine. \Vhen a key is depressed, the

cletent 12 which as before stated is rocked on the parallel armsl i and 15, and, the pin- 290 strikes the upper end of a vertical plate 31 and depresses the same slightly. This plate is longitudinally extended at its lower end as indicated at. 32 is carried by parallel will be seen from the direction of the parallel arms 33 and 34 and finally the depending projection of the slide 39 passes over the projection 38 of the plate 31 and locks the same in depressed position. The extension 32 of the plate 31 has a fiber flange 44 on which is mounted a pin 45. In the normal position as shown in. Fig. 1 the pin 45 engages and slightl "elevates the contact spring 46 and the ange 44 is directly over k and slightly depresses the contact spring 47, the third contact spring 48 1s provided directly .under the spring 47 and all of the three springs mentioned are insulated from each other and mounted on a standard 49. lVhentheden'ression of the ke 10 moves the extension 32 of the plate31 ownward, the spring t? being under the flange M will also be moved downwardly into contact with spring 48 and a circuit will then be closed throughdriving solenoid magnet 51. This magnet is mounted on a standard from the machine frame and attracts its core 52 between which and the core of a companion solenoid magnet is mounted a toothed rack 53. By a train of gears 54;, 55 and 56 the movement of the rack is transmitted to the sliding rack23. A retarding device consisting of a star wheel 58 mounted upon the shaft of a gear wheel 5% is adapted to be engaged by the jaws 57 of a-swingle 59 pivoted at 60 and having a downward extension 61 on either side of which is mounteda conmression spring 62.

When the keys 10 are depressed their lower ends are in the path of movement of the slide 39 so that some one of the steps 63 thereof finallyengage a depressed key. When this happens the continued forward movement of the slide 23 will notbe able to carry slide 39 with it, but the slide will retacts (see Fig. 1) each time a key is demain stationary so that projection 38 of the extension 32 of plate 31 has a relative movement forward as compared with slide 39. The projection 38 will finally pass for-S ward of slide 39, the spring 42 will then rock the parallel arms and 34 and as flange 44 will then move upwardly the contact spring 47 will move away from spring 48 thereby finally breaking the circuit of It will be remembered solenoid magnet 51. that contact spring 46 is under slight tension tending to move it downwardly so that when the pin 45 on flange 44 movesdownwardly the spring 46 will also move but as spring 47 moves downwardly to the same extent no contact will then take place. When. however, the plate 31 is raised by contact of a depressed key with slide 39, the spring 47 will also raise finder its own tension and be brought in contact with the spring 46 as the flange 44 is in its forward position and the pin 45. is out of position to hold up thespring. This closing of contacts 46 and 47' serves to energize the second solenoid magnet '71 which is adapted to return the slide 23 to its normal position. lVith this object mechanism preciselv similar to the mechanism described in connection with magnet 51 is provided, the same consisting of a core 72 which as before stated is attached to the" toothed rack 53.

It will be seen that when springs 46 and'47 are brought into' contact, that slide 23 will be returned to normal position and when such position is reached, pin 45 on flange 44 will engage contact spring 46 and move it away from spring 47, thereby finally breaking the circuit ofsolenoid magnet 71 and stopping the entire mechanism in normal position. To transmit the differential movement of the various slides 23 to the recording mechanism a series of contacts 111 and 112 are provided directly under the flanged lower part of the extension 32 on plate 31. These springs 111 and 112 are insulated from each other and carried in standard 49 and normally the scallops 11.3 are entirely out of contactwith the said springs. When, however, the arms 33 and 34 are rocked and the plate 31 descends the scallops will be depressed far enough so that the. projections thereof will engage the upper end of the contact spring 112 and depress it to contact with spring 11.1. It will therefore be seen i that as the slide 23 moves forwardly'a succession of contacts of springs 111 and 112 will be made depending upon "the extent of movement of said slide as controlled by the I particular key which has been depressed.

segments 123 pivoted upon a. shaft 124'and having ratchet. teeth 125 formed thereon,

" Mounted on a shaft 126 are arms 127 carry ing at their outer ends spring awls"128 which engage ratchet teeth 125 to advance the segments .123 and through them the? slides 120 step by step. Secured to the arms 127 are armatures 129 of magnets 130. A spring 131 tends to force the arms 127 up; ward against a stop rod 132. From the above description it will be seen that each time one of the magnets 130 is energized its corresponding rack 120 will be advanced one step. Upon the forward upper edge of the racks 120 are formed type 133 from naught to nine inclusive. A pin 134 carries a supply roll of blank paper 135 which is drawn over two guide pins 136 to a storage roller 13? which is provided with a toothed wheel 138. A feed pawl 139 is attached to the platen arm 140 and is adapted to feed the strip forward a short distance at each operation of said platen arm. A retaining pawl 141 is provided to prevent backward movement of said toothed wheel 138. A gear 142 transmits the movement of the wheel 138 through gear 143 to the roller 144 over which and three guide rollers 145 the ink ribbon 146 passes. The printing platen 147 is forced against the type to take an impression therefrom by a spring 148 but isnormally held restrained by a cam 149 mounted upon a driving shaft 150. When the shaft 150- is rotated in the direction of the arrow in Fig. 2 the platen arm 140 will be released and the spring 148 will force the platen 147 against the type as'before stated. A series of spring actuated pawls 151 engaging teeth 151 of racks 120 are pivoted on a shaft 152 and extend rearwardly as at 153 into the path of a bar 154 which is also pivoted on. a shaft Atone end of shaft 152 the bar has an extending arm 155 carrying an ant-1- friction roller 155 adapted to be operated upon by the cam edge of a cam disk 156. Fron this construction it will be seen that the racks and segments 123 are pre vented from retrograde movement during the return ofthe pawls 128 over the face of the ratchet teeth and that as soon as the shaft is started the arm will be cammed downward to elevate the bar 154 and positively lock the pawls 151 into the teeth of the racks 120. Two slides are provided one at each side of the machine which carry a restoring rod 161 which abuts the rear edge of the operated racks 120 to restore them to normal position. Said restoring rod 161 is operated by an arm 162 which is pivoted to the frame work of the machine and has connected thereto a link 163 which is provided with an antifriction roller 164 extending into the cam slot 165 of the cam156. I

The timing of the above described mechanism is as. follows: When the shaft 150 is rotated 'inthe direction of the arrow (see Fig.- 2) the roller 155 is immediately cammed downward to force the bar 151 upward against all of the projections 153 of the alining and locking pawls 151 thereby locking the printing racks and the bank selector slide in their set positions. The cam 1&9 will now release the platen arm H0 and an impression will be taken from the type 133. The locking pawls will now be released and the restoring rod 161 will be operated to restore all operated racks and the slide 170 to their normal position. As a safeguard against displacement from their normal position during the return of the restdring rod the rack 120 and slide 170 are again ldcked until the cam 156 is rotated to its home position. During the second half of the revolution of the shaft 150 the printing platen arm 110 is cammed to its a slide 170 (see Fig. 2 which is a part ofthe so called bank selector This slide is different, from the slides 120 in that it is shorter and has no printing type on its upper edge. It also has a less number of operating and alining teeth and is provided with a downwardly extending contact maker 171 which is insulated from the body of said slide. The operating mechanism'for this slide is exactly the same as that for the printing slides 120 excepting that its arma ture 212 (see Fig. 1) is polarized for the opposite pole as compared with the armatures 129 of the printing rack operating mechanism. Mounted upon the side frame of the machine and insulated therefrom is a series of contacts 172 and a continuous contact 17 3 over which the contact maker 171 travels.

' The object of this mechanism is to complete a circuit to each one of the operating magnets 130 successively. The means for driving the shaft 150 '18 shown 111 Fig. 3 and consists of a motor 175 connected by a train of gears 176 to said shaft. Mounted on shaft 150 is a stop disk 177 having a notch 178 out in its periphery adapted to be engaged by an arm 179. This arm is pivoted at 180 and has a fiber roller 181 mounted thereon for operating a pair of spring contacts 182 which are included in the motor circuit. Normally Spring pressed against the face of the arm 17 9 is a spring pawl 183 which is loosely pivoted on the shaft 150 and is adapted to be forced by its spring into the path of the arm 179 when said arm is operated to prevent the arm 179 from re: turning to its normal position until the shaft 150 'has made a complete revolution. A pin 181 carried by the disk 177 limits the 'disk. 177 to its normal position form a stop for the disk 177.

contacts

202 and 203 and hold them closed also raise said latter contacts, and the folwill be parted,

contacts

206 and 207 will be 7 initial movement of the pawl 183. The arm 179 extends forward of its pivot and has mounted thereon an armature 185 which is polarized for the same pole as the armatures 129 of the magnets 130 are. Magnet 186 is energized to attract its armature 185 and release shaft 150 and then operate the spring contacts 182 to close the motor circuit. A spring 187'holds the arm 179 against the periphery of the disk 17 7 so that as shaft 150 nears its home position the roller 181 will be raised from contact with the contact springs 182 thereby breaking the motor circuit. The arm 179 will at the same time force the pawl 183 which has rotated with and will Shown in Fig. 1 is a starting key 190 which is spring pressed to its outer position by a spring 191 and is locked 'in its depressed. position by a locking plunger 192. This plunger is operated to release the key 190 by a magnet whose armature is ivoted at 193 and extends over a in in sa'i lunger. The inner end of the 'ey 190 is a apted when depressed to close a pair of .con-. tacts 194. V

A relay 195 is shown in Fig. 1 whose armature is pivoted at 196 and is rovided with a gravity wiper pawl 197 Wl'llCh when said relay is energized will close contacts 198 and 199 and also contacts 200 and 201 momentarily, after which a rearwardly ex tending portion of said armature will close until the relay magnet 195 is denergized. When the armature returns to its normal position the wiper pawl 197 will wipe by the endof contact 198 without causing any motion of said contact.

Referringto Fig. 1 it will be seen that when a key is depressed and the arm 16 of arm 15 iselevated, said arm 16 will engage and raise contact 209 and by reason of the fiber insulating piece 291 interposed between said contact and contacts-207 and 20$ will lowing will result;

contacts

204 and 205 closed, contacts 208 and 209-will be closed and contact 209 will be parted from contact 210. This series of contacts is necessary for the following reasons; the rack bars 23 of the different banks of controlling keys are intended to operate successively beginning with the first bank at the right. The. relays 195 are directlyconnected to the main linesand are operated as soon as the current is allowed to reach them so that if the main circuit is not broken just before it reaches each of these relays they would all be operated together which would oausea wrong operation of the machine so the series of contacts above mentioned is provided at each bank to compel the relays 195 to opbank has been depressed and no key de-' pressed in the dimes bank. A battery 215 or other generator is provided to furnish current for the system. A key being depressed in the cents bank the contacts 204 to 210 will be in the position shown and the contact spring 47 in contact with spring 48 as will be remembered and after the starting key 190 is depressed and latched in its depressed position a circuit is made as follows; from the generator 215 through wire 216, contacts 194, wire 217,.wirc 218, contact 207, contact 206, wire 219, contact 47, contact 48,- wire 220, solenoid magnet 51, wire 221, contact 208, contact 209, wire 222, wire 223, back to the generator. This it will be remembered serves to energize the mag- 'net 51 to move the rack 23 forward until slide 39 strikes a depressed key. Vhen slide 39 abuts the key, contacts 47 and 48 will be parted and contact 47 will be thrown into connection with contact 46. the returning; circuit is then complete as follows: generator 215, wire 216. contacts 194. wire 217, wire 218, contact 207, contact 206, wire 219, contact 47, contact 46, wire 224, solenoid magnet 71, wire 225, wire 221. contact 208, contact 209, wire 222, wire 223 back to the generator. As the scalloped plate moves over the contacts 111 and 112 they will be brought to-- the will 215, 21-8, 226,

gether a number of times depending on key depressed and the recording circuit then be complete as follows: generator wire 216, contacts 194, wire 217, wire contact 207, contact 206, wire 219, wire contact 112, contact 111, wire 227, wire wire 229, wire 230 to magnet 130 of the rents printing rack, wire 231 to first individual contact piece 172, contact maker 171, continuous contact 173, wire 232, bank selector, magnet 233, wire 234, wire 235, wire 221, contact 208, contact 209, wire 222, wire 223 back to the generator. This will advance the cents printing rack proportionately to the key depressed but will not operate the magnet 233 because the armature 212 of said magnet is polarized oppositely to wire 217 wire 218, contact. 204, contact 205, wire 236, wire 237, wire 238, relay 195, wire 239, wire 240, wire 24]., contact 210, contact- 209, wire 241', wire 222, wire 223 back to the generator. This circuit will energize the relay 195 and as before explained will make a momentary contact between contacts 198 and 199 and contacts 200 and 201. '1 his will close a circuit to the bank selector as follows; generator 215, wire 216, contacts 194, wire 217, wire 218. contact 204, contact 205, wire 236, wire 237, wire 242. contact 198,

contact 199, wire 243, wire 234, to bank selector magnet 233, wire 232, continuous contact 173, contact maker 171, first individual contact 172,-wire 231, first magnet 130, wire 230, wire 229, wire 228, wire 244, contact 201, contact 200, wire 245, wire 241, contact 210. contact 209, wire 222, wire 223 back to the generator. Thus it will be seen that the momentary closing of contacts 198 to 201 cause an impulse to be sent to the recording machine in a reverse direction to those sent by the contacts 111 and 112. This as before stated causes the magnet 233 to be energizedto advance the rack 170 forward and causes the contact maker 171 to make contact between the continuous contact 173 and the second individual contact 172. 7

Immediately after the bank selector is operated through the'closing of the contacts 198 to 201, the armature of relay 195 closes

contacts

202 and 203 thereby completing a circuit to the next bank which if a key in said bank were depressed would be a dupli cation of the circuit for the previously eitplained bank, but as no key has been depressed (for sake of illustration) circuit will he made as follows: generator 215, wire 216, contacts 194, wire 217, wire 218, contact 204, contact 205, wire 236. wire 237, wire 242, contact 202, contact 203, wire 246, wire 247, wire 248, contact 204, contact 205, wire 249, wire 250, relay 195, wire 251, wire 252, wire 253, contact 210, contact 209, wire 253 wire 254, wire 240, wire 241, contact 210, contact 209, wire 222, wire 223 back to the generator. This circuit will close the re lay 195 and by momentarily closing the contacts 198 and 199 andthe contacts 200 and 201' to close the circuit to the bank selector as follows: generator wire 216, contacts 194, wire 217, wire 218, contact 204, contact 205, wire 236, wire 237, wire 242, contact 202, contact 203, wire 246, wire 247, wire 248, contact 204, contact 205, wire 249, wire 255, contact 198, contact 199. wire 256, wire tinuous contact 173, contact maker 171', second individual contact 172, wire 261, to magnet; 130 of the dimes bank, wire 262, wire 229, wire 228-, wire 258, wire 259, contact 201, contact 200, wire 260, wire 253, contact 210', contact 209, wire 253", 'wire 257, wire 234, to bank selector, magnet 233, wire 232, con- 254;, wire 240, wire 2 11, contact 210, contact 209, wire 222, wire 223 back to the generator. This will operate the bank selector in the same manner as heretofore explained. The operation as explained in connection with. the two banks shown will be repeated for as many banks as there are banks of controlling keys 10. The relay for the last bank will advance the contact maker 171 to the last individual contact 172 which is connected to the starting magnet 180.

Immediately after the bank selector is operated by the relay of the last. bank, a circuit the same the one which will now be explained, excepting that it will haveto pass through as many series of contacts 204; to 210 as there are banks of keys 10 and number of printing racks 120 will be made to permit the current to energize a starting re lay 265., This circuit includes generator 215, wire 210, contacts 19%, wire 217, wire 21S, contact -t, contact 205, wire 236, wire 28?, wire 212, contact 202, contact 203, wire 2 6, wire 25, wire 218, contact 201', contact 203, wire 249, wire contact 202, contact 20?), wire 20ll wire 20?. wire 20R, relay 2G5. wire 20ft. wire 2T0. wire 252 wire contact 210', contact 200, wire 253, wire 254-, wire 240, wire 2-1-1. contact 210, contact 200, wire 222,wire 223 back to the generator. This will energize the relay 265 whose armature will cause a momentary closing of contacts 2P1 and 275 and contacts 276 and 277 making a circuit as follows: generator 215, wire 210. contacts 19%, wire 217, wire 21S. contact 20%, contact 205, wire wire 237, wire 2&2, contact 202, contact 203, wire 246. wire 24:7, wire 24S, contact 20%. contact 205, wire 2-19, wire contact 202, contact 203', wire 206, wire 207, wire 271, contact 2. -lcontact 275, wire 27S, wire 228, wire 220, wire 2S5, starting magnet 1S6, wire 280. to the lastindiyidual contact 172, contact maker 171, continuous contact 173. wire magnet wire 234, wire 2T9, contact 27?, contact 276, wire 287, wire 270, wire 252, wire 253, contact 210', contact 209, wire 253, wire 254e, wire 240, wire 24:1, contact 210, contact 200, wire 222, wire baclnto the generator. This circuit will cause the magnet 180 to be energized to release the arm 170 from the locking disk 177 (see Fig. 3) thereby releasing shaft 150 and closing the contacts 182 which are included in a. local motor circuit as follows; battery 290, wire 291 contacts 182, wire 292, through the motor 175, wire 293, to battery. It will be noted that. after each relay is energized its circuit remains closed until the supply of current is cut off by the parting of contacts 1%.

Immediately after the contacts .274. to 277 are closed the contacts 272 and27 are closet and a circuit will be made as follows: generator 215, wire 216, contacts 194, wire 217,

wire 218, contact 20 1, contact 205, wire 236, wire 2 37, wire 212, contact contact 203, wire 240, wire 2' wire t" ontact 204, coi'itact 205, wire 21!), wire contact 202', contact 203, wire 260, wire 207, wire 2T1, contact 27 3. contact 272, wire 2S0, magnet 2Q1, wire wire 223 back to the generator. This will energize the magnet 281 which will release the starting key 190 thereby allowing the spring contacts 191 to part and break all circuits to the machine,

The operation of the machine as described as follows: Keys as desired are depressed and latched in their depressed position by their respectii'c detents. The latching of a key by its detent will operate the series of contacts 201 to 210 to divide the main circuit and: connect the operating circuit of its bank, The depressing of a key will also cause the contact l? to be movedinto engagement with the contact to. After the desired keys depressed, the starting key 190 is depressed and. latched in its depressed position.

Ills key will close the contacts 10$ and complete the main circuit to the generator 215. It a key in the cents bank is depressed. the operating mechanism of said bank will be operated as oon as the starting key is depressed. As before explained the depressed keys are released as soon as their rack bars have returned to their normal positions. During the forward movement of the bar impulses are sent to the distant recording device to set the printing bar 120 corresponding to the number of the key depressed. The releasing of the depressed key will release the series of contacts 201- to 210, thereby allowing them to assume their normal position. The current will now pass. on to the relay195 and close said relay. The circuit beyond said'relay is broken by the

contacts

202 and 203. Thus it will be seen that the main circuit beyond said relay is not complete until after said relay is operated. hen the relay 195 is operated it causes the contacts 198 to 201 to send a momentary impulse to the recording device to operate the hank selector to complete a circuit to opcrate the printing bar 120 of the next higher bank. Immediately after the closing of contacts 198 to 201, the

contacts

202 and 203 are closed to extend the main circuit to the next bank, If no key in the next bank is depressed contacts 204: to 210 remain in their normal position, thereby extending the main circuit to the next relay. Thus it will be seen that when no key in a bank is deg'niessed. the time required for operation of the'mechanism of said bank is saved and the main circuit continues on to the next relay uninterrupted. This same operation is repeated througlmut all the banks. The momentary impulse caused by the last relay serves to complete a circuit to the magnet 180. The operation of the last relay 195 extends the main circuit to a separate relay 265. This relay is utilized to close the circuit to the magnet 186 to release the driving device of the recording mechanism and start the motor therefor. After said motor starting circuit is complete the relay 265 closes contacts 272 and 27?). This will extend the main circuit to the magnet 281 to release the starting key and break the main circuit. It will be seen that thereare only two wires re quired between the banks of keys and the recording device, where heretofore it has been customary to use one wire for each bank of keys and a commonreturn wire for the complete system.

lVhile the form of mechanism here shown and described, is admirably adapted to fulfil the objects primarily stated. it is to be understood that it is not intended to confine the invention to the one form of embodiment herein disclosed, for it is susceptible of embodiment in various forms, all coming within the scope of the claims which follow.

hat is claimed is follows:

1. In a recording mechanism. the combination-with a plurality of banks of keys, of a differentially moving element for each bank of keys controlled thereby, means for n'ioving said elements until stopped by a key, means rendered operative when said elements are stopped for returning said elements. and a recording device controlled by said elements.

2. In a recording mechanism, the combination with a plurality of banks of controlling keys, of a series of differentially movable elements controlled by said keys. indiv-idual means for moving each of said elements successively until stopped by a key, separately operated means rendered operative when said elements are stopped for returning said elements, and. a recording device controlled by said elements.

3. In a recording mechanism, the combination with a series of manipulative ele ments, of a recording device, means controller by said elements for causing a differential operation of said recording device, a series of power devices for moving said means in one direction, a second series of power devices thrown into operation by said first series of power devices for moving said means in the reverse direction.

4. In a recording mechanism. the combination with recording devices, of a plurality of banks of keys controlling same, differentially movable elements for causing ope :1- tion oi. said recording devices to an extent determined by the keys, a seriesof motormechanisms for operating said elements and a second series of motor mechanisms thrown into operation by said first series for restoring said elements to their. original position.

5. In a recording mechanism the combination with a plurality of banks of controlseries of printing elements, a series of separately operated means for causing said elements to be'sct differentially, a series of in dividual motors for moving said means in one direction, a, second series of individual motors for moving said means in the opposite direction and a separate key effecting the operation of both series of motors.

7. In a recording mechanism. the combination with a plurality of banks of keys, of a recorder comprisinga series of printing elements. means for causing a differential movement of said elements depending upon the. keys depressed, a serics of motors for moving said i'ueans in one direction and a series of motors tor returning said means to their normal position.

8. In a recording mechanism. the combination with a recording device comprising a series of printing elements. of a plurality of manipulative devices for determining the movement. of same. a series of latching; devices for said manipulative devices. a ries of dilferentially movable means ..or causing operation of said printing elements. electric power mechanisms for returning said means to their normal positions, and means depending upon the operation of the latching devices of the i'nanipulative devices for. energizing said electric power inecl'ianisms.

9. In arecording mechanism. the combination with recording devices, of a plurah. ity of banks of controlling k a series of diit'erentially movable elements for causing the operation of said recording devices. motor mechanisms for driving said elements in opposite directions. a d circuits. for controlling said mechanisms. and themselves controlled by the keys.

10. In a recording mechanism, thecombination with a recording device comprising a series of printing elements. of a plurality of banks of keys, a series of differentially movable means for causing the operation of said printing elements, two series of motor mechanisms for moving said means in opposite directions, a circuit for one of said series of motor mechanisms closed by the operation of the keys, and a circuit for the other series-of motor mechanisms closed by the completion of movement of the differential means under control ofsaid first series of motor mechanisms.

11; In a recording mechanism, the combination with a recording device comprising under control of said first series of motor mechanisms.

12. In a recording mechanism, the combination with a recording device, of a plurality of banks of keys, a plurality of different-ially movable elements under control of said keys and causing operation of said recording device, a series of motors for moving said elements in one direction until stopped by a key, a circuit controlling said series of motors closed by the operation of a key, a second series of motors for returning said elements to normal position, and a circuit for said second series of motors closed when said elements abut the depressed key.

13. In a recordingmechanism, the combination with recording devices, a series of elements for causing operation of same, a series of magnets for moving said elements a predetermined distance in one direction, a second series of magnets for returning said elements to their normal positions, and circuit for said magnets successively closed under control of said elements.

14. In a recording mechanism, the combination with recording devices, of a plurality of banks of keys for controlling same, a series of elements for causing operation of said recording devices, a series of motor magnets for moving said elements a predetermined distance in one direction, a second series of motor magnets tor returning said elements to their normal positions, and circuits for said motor magnets successively closed under control of said keys.

15. In a. recording mechanism, the combination with a recording device. of a plurality of banks of keys, a plurality of difi'erentially movable elements controlling the recording device, electrically operated motors for operating said elements, a normally open circuit for said motors, a main circuit, a series ofcontacts for each'bank of keys for extending the main circuit beyond said bank, a separate means for completing the main circuit to a genera tor, and means for operating the said series of contacts to divide the main-,circuit and connect the motor circuit therewith.

16. In a recording mechanism, the combination with a plurality of banks of keys, a plurality t movable elements, a plurality of motors for operating each of said elements, a

circuit toreach of said motors, a main circuit, a series of contacts for each bank of keys for extending the main circuit, means controlled by the depression of the keys for operating the said series of contacts to divide the main printing elements, a plurality of banks of keys, differentially movable means for oper:

jating the recording device controlled by the keys, an interrupter controlled by said differentially movable means which completes the circuits to tl e electric motors to energize said motors.

18. In a recording mechanism, the cwnbination with a recording device comprising a. plu 'ality of printing elements, electric motors and circuits therefor for setting said ferentially movable means which completes the circuits to the electric motors to energize said motors, and means for returning said printing elements to their normal posi' tion.

19. In a recordingmechanism, thc combination with a recording device comprisinga plurality of printing elements, electric motors and circuits therefor for setting said printing elements, a plurality of banks of keys, difierentially movable means for opcrating the recording device controlled by the keys, an interrupter controlled by said differentially movable means which com-' plctes the circuits to the electric motorsto energize for said printing elements.

20. In a recording mechanism, the combination with a recording device comprising a plurality of printing elements, electric mosaid motors, and alining devices tors and circuits therefor for setting said u P nation with a recording device comprsing a. plurality of printing elements, electric motors and circuits therefor for setting said. printing elements, a plurality of banks of keys, differentially movable means for operating the recordingdevice controlled by the 13 keys, an interrupter controlled by said ditferentially movable means whichcompletes the circuits to the electric motors to energize said motors, a printing platen and means "for feeding a paper strip and an inking ribbon at each operation oft-he machine.

2 2..111 a recording mechanism, the coml)inat ioii with a plurality of printing elements, and means for setting said printing elements, of a plurality of banks of keys for controlling said means. a movable contact ments, aseries of polarized magnets for setting said printing el'ements,-of a plurality of keys controlling said magnets, a selecting device, a sin le polarized magnet for operating sai selecting device, a circuit'for all of the polarized magnets under control of the selecting device, means for causing a current to pass through said circuit in one direction to energize the polar- .ized magnets of the printing elements without afiecting the selecting device operating magnet and a separate means for, causing a current to pass through said circuit in an opposite direction to energize the operating magnet of the contact maker without atlecting the operating magnets of the printing series of motors with the motor .circuit for all ofsaid motors,

.for. the recording device,

yond said relay magnets.

elements.

24. In a recording mechanism, the combination with a recording device, a series of printing elements, a plurality of manipulative devices controlling said elements, a for said printing elements, a selecting device, a separate motor for operating said selecting device, a contact maker operating with said selecting device to suecessi vely connect each one of the series of motors for the printing elements in parallel for the selecting device, a a circuit and the curconnections so arranged as to cause difi'ercuttimes to 4 l natelyuor successively as determined by said manipulative devices. I

- -2 5.-Infa recording mechanism, the combination withaiecording device, of a plurality'of-banks of keys controlling said device, a, main circuit, a series of contacts for '6 each'bank of keys for-extending the main circuit; beyond said bank, a selecting device a series of relay magnets for controlling said selecting device-and for extending the main circuit be- 26. In a recording mehcanisin,

'means operated by the the com-'.-

bination with a recording device and an operating device'therefor, of a plurality of printing elements, a plurality of banks of keys, electrically operated devices controlling the positioning of the printing elements, individual circuits for said electrically operated devices, a main circuit, a series ofcontacts for dividing the main circuit and connecting said individual circuits thereto, a selecting device for the recording device, a series of relays controlling said selecting device, a second series of contacts for ex tending the main circuit beyond the bank to'its corresponding relay, separate contacts for each relay for extending the main circuit to a succeeding bank of keys, means for controllin the operating device of the recording cIevice, a magnet for controlling said means, a relay for operating said magnet, a starting key for closing the main circuit, a releasing device for said key and contacts operated by the last mentioned relay for causing operation of the releasing device of the startingkey to break the main circuit.

27. In a recording mechanism, the combination with controlling mechanism, comprising banks of keys, and mechanism movable difierent-ially under control of said keys, of means rendering said differentially movable mechanism inoperative, except the mechanism of lowest denomination, means operated by the final increment of movement of any difierentially movable mechanism for rendering operative the mechanism of the next higher order, and recording mechanism controlled by said controlling mechanism.

28. In a recording mechanism, the combination With controlling mechanism, comprising diiterentially movable denominational devices, and banks of keys controlling same, of means rendering said devices except thatv of lowest denomination inoperative, means operated by the final movement of any denominational device for rendering operative the denominational devices of the nexthigher order, and distant denominational recording devices successively operated in correspondence with the difi'erentially movabledevices. v

29. In a recording mechanism, the combination with controlling mechanism comprising differentially movable denominational devices, and banksof keys controlling same, of electrical means includin circuits for operating said denominational devices, means for normally breaking the circuit to all said means except that of lowest order, final increment of movement of any denominational devices for closing the circuit of the means of next higher order, and accounting mechanism controlled by said denominational devices.

30. In 'a recording mechanism, the combination with controlling mechanism, com

prising banks of keys, and differentially movable denominational devices controlled thereby, of accounting mechanism having a differentially movable element for each of said devices, each of said elements being arranged to be controlled by corresponding devices, means normally rendering each of said elements and devices inoperative except those of lowest denomination, and means controlled by each of said denominational devices for rendering operative the device of next higher order.

31. In a recording mechanism, the combination with controlling mechanism, comprising banks of keys and differentially movable denominational elements controlled thereby, of motors for each of said elements,

-means rendering normally inoperative all the motors except those of lowest demonination. means operated by each element for rendering operative the element of next higher order, and accounting mechanism controlled by said movable elements.

In a recording mechanism. the combination with a transmitting instrument including denominational elements, of a distant receiving instrument including denominational elements corresponding to those of the transmitting instrument, a single electric circuit connecting the transmitting and receiving instruments, means for controlling said circuit successively from the several denominational elements of the transmitting instrument, and means for bringing the several denominational elements of the receiving instrument successively under the control of said connecting electric circuit.

83. In a recording mechanism, the combination with a transmitter including denominational elements, of a distant receiver comprising denominationl elements corresponding to those of the receiver, an electric circuit connecting said transmitter and said receiver, means for connecting the transmitter denominational elements successively into a condition controlling said circuit, de-

vices for connecting the receiver elements into a condition under control of said circuit, and means for automatically retaining in the receiver an entry of transactions on the transmitter.

34. In a recording mechanism, the com bination with a transmitter including de nominational elements, of a receiver also including denominational elements, an electric circuit connecting said transmitter and receiver, local circuits controlled by the denominational elements of the transmitter, means for successively connecting said local circuits to said connecting circuit, and means for auton atically bringing said receiver elements successively under control of said connecting circuit.

35. In a recording mechanism, the combi nation with a transmitter including denominational elements, of a receiver including corresponding denominational elements, an electric connection between said transmitter and receiver, means for controlling said electric connection by a denominational element of the transmitter, means actuated by said transmitter element for shifting the control of said connection to a succeeding denominational element, and means for automatically bringing the denominational elements of the receiver successively under control of said electric connection,

36. In a recording mechanism, the combination with a transmitter, of a receiver including denominational elements, an electric connection between said transmit; r and receiver, means whereby said transmitter causes impulses to pass over said connection to actuate a denominational element of the receiver, and devices whereby'an impulse having characteristics distinct from said actuating impulses brings another denominational element under control of said transmitter.

37. In a recording inechanism,-the combination witlra transmitter, oi a receiver having denominational elements, an electric connection between said transmitter and one of said receiver denominational elements,means untler control of said transmitter for sending impulses over saidlconnection to actuting over said connection an impulse having characteristics distinct from said actuating impulses, with devices whereby said last mentioned impulse brings a succeeding dcnominational element of the receiver under control of said electric connection.

38. In an accounting mechanism, the combination with a plurality of movable ele ments, and means for successively actuating same differentially, the 'said means being under the control of said elements.

In an accounting mechanism, the combination with a plurality of movable denominational elements, and means for successively actuating same differentially, each elementcontrolling the actuation of the element of the nextdenomination.

40. In an accounting mechanism, the combination with a transmitting instrument having differentially movable elements, of a receiving instrument having corresponding elements, and a selector for the elements of the receiving instrument controlled by the elements of the transmitting instrument.

41. In an accounting mechanism, the combination with a transmitting instrument having dilierentially movable elements, of areceiving instrument having corresponding elements, and a selector given a step by step movement'by the elements of the t'ansmitting instrument for controlling the elements of the receiving instrument.

42. In an accounting mechanism, the combination with a transmitting instrument having differentially movable denominational elements, of a receiving instrument having corresponding elements, and a selector actuatedby theelements of the transmitting instrument for successively controlling the elements of the receiving instrument.

44. In an accounting mechanism, the com bination with a transmitting instrument having differentially movable elements, of a plurality of solenoids for actuating said elements, a receiving instrument having elements corresponding to thoseof the trans-v mitting instrument, and a magnetically'operated selector actuated by parts ofthe transmitting instrument for successively controlling the elements of the receivinginstrument.

45. In an accounting mechanism, the combination with a transmitting instrument -having differentially movable elements, of

a plurality of solenoids for actuating said elements, a receiving instrument having elements corresponding to those of the transmitting instrument, means including a selector for connecting the elements of said instruments, and ,means controlled by' said 'movable elements of the transmitting instrument for intermittently actuating said selector.

46. In a recording mechanlsm, the comb1- nation with a transmitting instrument, of a distantreceiving instrument including =de nominational elements, means for operating said elements including a successively operated circuit closer controlledby the trans- -mitting instrument, and means for taking an impression from said elements,- the said impression means beingcontrolled by the circuit close-r.

. 47. In a recording mechanism, the combi-- nation with a transmitting instrument, ofa distant receiving instrument including differentially movable type carriers, electrical 4 devices for setting said type carriers, a con; tact maker controlled by the transmitting instrument for establishing circuits through said devices,-means for taking an impression from the type carriers after they are set, and a motor controlled by said contact maker for operating the impression means. 48. In a recording mechanism, the combination with a plurality of differentially movable type carriers, of means including at circuit closer for successively setting said type carriers, and. means for taking an impression from the type carrier's controlled by the circuit closer. v

49. In an accounting machine, the combination with a plurality of differentially movable elements, of means for operating'said elements, and means for first locking said elements in their set position, then restoring them to normal position and finallyiocking them temporarily in their. restored position.

50. In an accounting. machine, the combination with a plurality of differentially movable type carriers, of means for operating said elements, a series of alining pawls,-a cam for first locking said pawls in engagement with the type carriers in their opera-' tive position, then restoring said carriers to normal position and finally locking the pawls temporarily in engagement with the type carriers in their restored position to prevent rebound of same.

51. In a machine of the class described,

the combination with a plurality of differentially movable elements, of means for suc- ,cessively actuating the same during an operation of the machine,-manipulative devices for determining the extent of movement of said elements, and means rendered operative by said elements when the latter have moved their determined extent for returning said elements tonormal position.

52. In a machine of the class described, the combination with a plurality of differentially movable elements, of power devices for successively actuating the same during an operation of the machine, keys for determining the extent of movement of said elements, and additional power devices-rem during an operation of the machine, keys for determining the extent of movement of said elements, additional electric power devices for returning said elementsto normal position, and circuits for both of said power devices under the control of said keys.

54:. In a machine of the class described, the combination with a plurality of differentially movable elements, of electric power devices for successively actuating the same during an operation of the machine, keys for determining the extent of movement of said elements, additional electric power devices for returning said elements to normal position, circuits for both sets of power devices, and means carried by the differentially movable elements and controlled'by the keys for closing said circuits.

ing devices also mounted upon the differ entially movable elements for locking the circuit closing plates in their operated positions, the said locking devices being constructed to contact with the depressed keys and be thereliy moved to release the circuit closing plates.

In a machine of the class described, the combination with a plurality ofditl'erentially movable elements, of electric power devices for successively actuating the same during an operation of the machine, depressible keys for determining the extent of movement of said elements, additional electric power devices for returning said elements to normal position, circuits for both sets of power devices, spring drawn plates mounted upon the ditlerentially m vable elements and operated by the key IOl' closing the circuits through the first mentioned power devices, locking devices also mounted upon the differentially movable elements for locking the circuit closing plates in their operated iositions the said locking devices being constructed to contact with the depressed keys and be thereby moved to release the circuit closing plates, circuits for the power devices for returning the'diflerentially movable elements established by the released circuit closing plates, and means carried by the circuit closing plates for breaking the lastmentioned circuits as the differentially movable elements reach normal or home position.

In testimony whereof I allix my signature in the presence of two Witnesses.

CLARENCE B. FOSTER.

\Vitnesses 2 101' C. GLASS, CARL W. 'Bnus'r.