US1265440A

US1265440A - Calculating-machine.

Info

Publication number: US1265440A
Application number: US2951715A
Authority: US
Inventors: William J Fabian
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-05-21
Filing date: 1915-05-21
Publication date: 1918-05-07
Anticipated expiration: 1935-05-07

Description

W. l. FABMN.

CALCULATING MACHlNE.

APPLICATION FILED mwzl. I9I5.

1,265,440. Patented May 7,1918.

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. J. FABIAN.

CALCULATING MACHINE.

APPLICATION men mwzx. 191s.

Patented may 7,1918.

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Ina/8x60 Zlz'amz J [21% fan W. I. FABIANF CALCULATING IMMUNE.

AI'PLICATIOI FILED IN 2|. "l5. 1,265,440. Patented May 7,1918.

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71/; z Inventor: j V @Qtm William Jia&z'am

W. J. FABIAN.

V CALCULATFNG MACHINE.

APPLICATIGII man mvzl, ms.

Patented May 7, 1918.

a SHEETS-SNEET 4 Wnein'efl: [2e yang/*2.- Wfi .Qkm William J [Mann 9 k MM 1% S W. .l. FABIAN. CALCULATING MACHINE. APPLICATION man an 21. l9|5- fnyazaan- William JF&lan

W. J. FABMN.

CALCULATING MACHINE. APPLICATION FILED mum. m5.

Patented May 7,1918.

3 SHEETSSHEET 1- jVl-g 8/515 [7? W992 (02 Quin William Jf a%ian W. l. FABMN.

CALCULATING MACHINE. APPLICATION men pm 2 ms.

1,265,4140. Patented May 7,1918.

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CALCULATING-MACHIN E.

Specification of Letters Patent.

Patented May '7, 1918.

Application filed May 21, 1915. Serial No. 29,517.

- To all whom it may concern:

Be it known that I, W'ILLIAM J. FABIAN, a' citizen of the United States, and resident of Evanston, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Calculatin -Machines, of which the following is a speci cation, and which are illustrated in the accompanying drawings, forming a part thereof.

The invention relates to machines for making arithmetical computations and more particularly to those having provision for printing the items and the result of the computation from the same type. The object of the invention is to provide a calculating machine which shall be of simple construction and capable of performing a variety of operations with a-minimum of manual manipulation.

In the accompanying drawings,

Figure 1 is a plan view showing a calculating machine embodying the features of improvement provided by the invention,

Fig. 2 is a longitudinal vertical sectional view of the same taken on two planes indicated by the broken line 22 on Fig. 3,

Fig. 3 is a plan sectional view taken on the line 33 of Fig. 2,

' Fig. =1 is a plan view of the machine with the cover removed and with the side walls of the case and the stems of certain of the controlling keys shown in section, some parts being omitted for simplicity of illustration,

Fig. 5 is a detail front elevation with the parts of the case and certain of the operating elements shown in section and with some of the parts broken away,

Fig. 6 is a side elevation showing one of the accumulator wheels,

Fig. 7 shows an intermediate supporting frame and some parts of the mechanism ad jacent thereto in side elevation, a pair of operating shafts and a detail of the case being shown in section,

Fig. 8 is a detail view of the key-board and some of the associated members, partly in section,

' Fig. 9 is a detail rear elevation of the mechanism within the case, a part of the floor plate being shown in section,

Fig. 10 is a detail side elevation showing some of the controlling elements of the mechanism, the supporting shafts therefor and a part of the case being shown in sectlon,

Figs. 11 and 12 are detail views of the item wheels and some of the supporting members, Fig. 11 being partly in section on the line 1111 of Fig. 12, and Fig. 12 be ing partly in section on the line 12-42 of Fig. 11,

Figs. 13, 14 and 15 are detail side views drawn to an enlarged Scale and showing the construction of different portions of the rims of the main wheel segments employed in the machine, some of the parts being broken away in Figs. 14 and 15,

Fig. 16 is a detail side View showing the parts employed for supporting and operating two of the platens against which the printing is accomplished, with a detail of the floor plate appearing in section, and

Fig. 17 is a front elevation showing the manner in which the apparatus provided by the invention may be associated with a typewriting machine for permitting the conjoint use of the two machines for billing and the like.

In the particular form of construction selected for illustration the operative parts are principally inclosed within a case generally designated and comprising a floor plate 51, front and

rear end walls

52, 53, the two side walls 54:, and 55, and a cover plate 56. The floor plate 5-1 is represented as being provided wlth a recess 57 for the reception of the platen roller 58 of an ordinary typewriting machine. A well known form of typewriting machine is shown in outline at 59 in Fi 17.

When the calcu ating machine provided by the invention is to be used in conjunction with a typewriting machine, as 59, a. stand 60 is desirably employed. As shown the stand is provided with seats 61 and 62 for supporting the typcwriting machine 59 and the case 50 of the calculating machine in suitable relative positions for the endwise movement of the platen 58 of the typewriting' machine into the recess 57 of the floor plate 51 from one side of the case 50. pair of main side frames 63 and 64, a pair of

intermediate frames

65 and 66 and a pair of

brackets

67 and 68, all rising from the lioor plate 51, provide the principal supports for the parts within the case 502 In addition to having provision for printing both the iteins and results of thecornputations against the platen, as 58, of a typewriting machine, the apparatus preferably also includes means for printing the, items and results upon two record strips, as (39 and 70. These record stripsturn over the platens which are shown at'i'l and 72, respectively, and both of which are supported outside of the case 50, as by the extension of the brackets 07 and 68 through an opening 73 in the rear wall 53. The platen 71 extends between and is directly supported by the brackets 67 and-68. The platen 72, on the other hand, is mounted between a pair of crank arms 7 1 and 7 5 of a rock shaft '76, which in turn, extends between and is journaled adjacent its opposite ends in the

brackets

67 and 68. p

The record strips 69 and 7 0 may be sup plied from any convenient source. In the arrangement shown, the record strip 70 is supplied to the platen72 from a spool 77. This spool is removably journaled between the outer end portions of the

brackets

67 and 68. The machine is also supplied with a set of item wheels 78 and accumulator wheels 79, both of which are visible through openings, as 80 and 81, in the front wall 52. The actuation of the machine may be accomplished from an operating handle 82 which is exposed at one side of the case 50. At each operation of the machine this handle is manually swung downwardly and forwardly. As the handle is idle during its return movements, the movement of the handle in this direction is conveniently accomplished by a spring, as 291. (See Fig. 3.)

The drawings show the machine equipped with eighty-one numeral keys 83. These are arranged in nine rows, as 84, 85, 86, 87, 88, S9, 90, 91 and 92. A blank key 93, for correcting errors, is associated with each of the said rows of numeral keys 83. To proride for the operation of the machine for accomplishing several different results there is also a plurality of controlling keys 9 1, 95, 96, and 97. These last mentioned keys are conveniently marked to indicate the character of the operation for which they are provided. As shown, the key 94 is marked R for repeat, the key 95 T for total,

the key 96 ST for subtotal and the key 97 S for subtract.

All of the

keys

83 and 93 have stems marked 100 and 100 respectively. These key stems slide vertically through the cover plate 56 and through a supplemental plate 112' which is supported below and spaced apart from the cover plate 56, as by brackets 111. A separate elevating sprin 98 is associated with each of the numeral keys 83 and blankkeys"93. As shown, each elevating spring 98, reacts between the under side of the cover plate 56 and a stud 99 which is fixed in the stem,,as 100 or 100, of the corresponding key.

The stems, as 101, 102, 103 andlOfi of the controlling

keys

94,95, 96 and 97 also slide through thecoyeiuplate 56. Each of these key stems extends downwardly through the chamber of the case 50, in front of the supplcn'iental plate 112, and telescopically enters the bore of a tubular guide lug 105.

The guide lugs 105 are all formed upon a common bracket plate 106 which is secured against thefioor plate 51 of the case. A spring 107 15 housed within thebore of each of the tubular guide lugs 105 and reacts between the floor plate 51 and the lower end of the corresponding

key stem

101, 102, 1103 or 104 for elevating the corresponding rey.

A latch mechanism for retaining each of the numeral keys 83 in depressed position and for preventing the depression of a second numeral key 83 in any of the rows 81 to 92, is desirably provided. To this end an oscillating channeled locking plate 108, rotated in one direction by a spring, as 290, is associated with each of the said rows of numeral keys. These locking plates extend between and have their opposite ends pivotally mounted in bars 109, 110 (Fig. 2). The bars 109 and 110 extend transversely beneath the cover plate 56 in front of all of the numeral keys 83 and in rear of the blank keys 93, respectively. They are supported by being secured against thebraekets 111.

The stem 100 of each of the numeral keys 83 has a plurality of lateral notches 113, 114 and 1 15, (Fig. 7). The notches 113, 115 are of the same depth. The notch 113 15 so formed as to provide the key stem with an oblique downwardly facing cam shoulder 116. Similarly, the notch 114 serves to provide the key stem with upwardly and downwardly facing abrupt shoulders 11? and 118, the notch being deeper adjacent the downwardly facing shoulder 118 than ad ]acent the upwardly facing shoulder 117. The notch 115 is so formed as to provide the key stem with an abrupt downwardly facing shoulder 119.

Upon the depression of a numeral key 83 keys in the same row.

in any row,' the obli" ue' dow'n'wardly facing cam shoulder-1161) the stemof =the depressed -key"engages 'the -lower edge 120 of the corresponding locking plate 108iand swings the lockin plateupon its axis to bring the upper-e go", as 12l'bf the'locki'ng plate into engagement with the 'downwardly 'facin'g abru v shoulder "118. of the stem 100 of each dfthe -remainingnumeral The depression of a second key 5 in' the same'j rovv without" first depressing thecorrespondin blankfke'yg 93, is accord ngly "prevented. M As. theoblique a cam sh0ulder 116 of"the;stem"of the de' pressed key passes below the lower edge} 120 of't'he locking plate 118, the spring rotation of the plate causes this edge to be enga ed with theul'pwardly facing abrupt s oulder 117 ;for olding the'iiey in depressed position-butjwithont disengag ing the upper edge 121 of the locking la w 108 from the downwardly facing shou ders 118 of the remaining key stems. v100 in the same row?"- t '1' :9 When a numeral key 83 in any row has been improperly dc'ipr'essed, 'it a is elevated and thesubsequent"depression of any numeral key 83 the same row is permitted? by pressing the corresponding blank key 93. "For-this pur oseaf palr' of lateral notches=122- and 123 are formed in thestemf 100? of eaoWblahk key 93. w Each 'notch"1 23 is so formedes'toi rovide the corresponding" key stem 100 'Wi' lien obli ue downwardly fncin g cam shoulder'124, pen the de'p'res' sion ofthe blank'lrey 93, the oblique card shoulder124 of' its' stem 100, engages with" the lower edge 120 of the corresponding locking'plate 108 and swings the lockin plate upon its pivots to disengage the sai lower edge 120 of the plate from th'e up- \vardly facing shoulder 117 of the stem 100 of any depressed key 83 in ythesame row. The depressed numeral key is accordinglyelevated by its spring 98 and upon the re lease of the blank key 93,-the locking plate 108 is rotated by its spring 'to-disengage' the upperedge 121 of the platezfrom the downwardly facing shoulders118 of the stems of the remaining'nnmeral keys in the same row." iit it Separate sets of type/

generallydesig liiltQCl

125, 126,and 127, respectively, :are preferably employed for rinting a ainst the platens 58, 71'and 72. he type 0 each set comprises nine rows of ten characters each and the 'ten characters in the correspondingrows of all of the sets are mounted for simultaneous movement. As shown,' nine wheel segments designated, 128, 129, 130. 131,132,433, 134, 135, and'135, are provided for supporting the type. These wheel segments are mounted for rotation about a common axis as by being pivotally a movable actuatin supportedfi'in' al-ineinent on a transverse shaft 136.- This-shaft has its opposite ends journaledfin the -'

sideframes

63 and 64.

Each-Wheel segment 128'to 135 is formed with-

rim sections

137, 138, and 139 upon Whichthe corre ponding=type0f the three

sets

125, 126* ''and' 127 are respectively mounted. k oir'rth friin section 140 formed upon eachof: the'avheel'segments'128 to 135 serves *for carrying a set of sliding pins 141 and a; set of yielding' ge'ar teeth 142. n Each rim sectio11-'1 4() is carried-by anarm 143 and themns 1143 of the several wheel segments are *laterally* ofi' set in differing amounts. This arrangement permits the several rows of characters' in each of the sets-of rtypeg 125; I26, and 127 to move in p'lane's-whioh-are relatively close together while 'tlie-slidingi'pins 141 and pawls 142 of theseveml- -wheel segments are more \vide'lyiseparated Thespacing of the pins 141 ofthe 'iseveral wlieel segments 128 to 1351533 'therebymmranged'to correspond with ihe spacing of thelseveral rows 84 to 92 of the numeral-keys 1 5 In thevoperation of the machine, selected characters from f :the l several sets of type 125, name 127 are brought to printing p'ositionMi ni frontn ofi' tlie corresponding platens-58 N71 and: 72;:by angular movement oi'z the wheel segments 128 to 135*. Normally each of theselwheel segments occupies la 'positibn in vthieh -the zero characters: 144; 196; and lQ'L- of the three sets of

type

125, 126, and 127,-'are positioned in front: of the correspon'ding platens. Accidental displacement of each wheel segment, as 128; fronrthis position is pre- Yentedbyproviding the rim section 139 of each segment with a notch 145 which is yieldingly engaged by a leaf spring 146 (Fig. 2.) This leaf spring 146 is convenientl y supportedby bei'ng fsecurcd against the underside ofa tie r0614? which extends bet-Ween and connects the side frames Gilead-64; H

*Movement of the Wheel segments 128 to 135,- is accomplished by a selective depressiorvof the pll'lS '1'41,=l1l1d the engagement of "211111148 With the depresse'd p'ins. '-As s own; the numeral keys 83 serve for-depressing the pins 141 into the ath- 0f the actuating arm 148. i The ins 141 upon each wheel segment 128 to 135 are accordingly alined'with the lower ends of the stems 100- of the keys 83 in one of the rows 84 to 921 For supporting the pins 141 the' adjacent part of the rim section 140 of each wheel segmenflas 128 is composed of a pair of parallel plates 149, 150 (Fig. 15) which-are laterally spaced apart to slidin ly receive'thepins'lllbetween them. T is relative position of the plates 149, '150 is maintained by means of a plurality of spacing blocks 151 which unite the marginal pontions of the plates, between the pins 141. Each pin 141 is held against accidental displacement in each of its two positions by locating an expansion spring 152 in the space inclosed by the side plates 149 and spacing blocks 151, alternately between each two adjacent pins. Two notches 153 and 154 are provided upon each pin for engagement with the corresponding sprin 152 in thetwo 'positions of the pin. Pre erably the pins 141 have Theads 155. These heads limit the downward movement of the pins and overhang. the side of the corresponding wheel segment, as 128 for engagement with a movable restoring bar 156.

The restoring bar 156 is movably held against one side of the rim section 140 of the corresponding wheel segment, as 128. As show n, the two ends of the restoningbar- 156 are respectively united with a swinging link 157 and with a lever 158, both of which are in turn pivotally secured against the adja cent side plate, as 150 ofthe corresponding rim section 140. The lever 158 extends rearwardly beyond the end of rim section 140 of the corresponding wheel segment, as 128, and into the path of the stem 100 of one of the blank keys 93. Depression of a blank key 93 accordingly serves to restore any depressed pin 141 of the correspondin wheel segment, as 128, in addition to per 'orming the fimction already described of permitting the restoration of any depressed numeral-key 83, in the same row, as 84.

Upon each forward movement of the actuating arm 148, each wheel se ment 128 to 135 upon which a pin 141 as been (1 pressed, is moved through a sufficient distance to bring the depressed in against a fixed stop rod 159, (Fig. 4). he wheel segments are then firmly held a ainst movement by the engagement of t e depressed pins 141 between the actuating arm 148 and the stop rod 159 while printin is accomplished from the

type

125, 126 anl 127. The stop rod 159 extends transversely through the wheel segments Elite 135 below their rim sections 140 and in rear of arms 143. The stop rod is sup ends upon the said rames 63 and 64. It serves to limit the return movement of the wheel segments 128 to 135" by engagement of the arms 143 with said rod.

The actuating arm 148 extends between and is rigidly supported-at its opposite ends upon a pair of crank arms 160 and 161. These crank arms are fixed upon the shaft 136, each crank arm being located just inside of the

correspondin side frame

63, 64. The rotation of the sha t 136 for swinging the crank arms 161 and moving the actuatin arm 148 is oneof the operations accom phshed upon the forward movement of the operating handle 82. As shown, this operatorted at its opposite r inghandle is provided with a tubular. hub founedzinetwo'sections 162-.and-163. These hub sections are rotata 1y. connected by providing the outer section, as 162 with studs 1.64 which enter notches formed in. the adjacentend of the inner section, as 163. Both of the

tubular hub sections

162, 163 of the operating, handle82'are supported by being sleeved upon a fixed stud. 166. This. stud has one end fixed in the intermediate frame member 66. It projects outwardh. therefuomthrough-the side frame 644111 the adjacent' side wall 55 of the case 50. The hub section 162 extends loosely through the adjacent side wall 55 of the case and through the side frame 64, in the latter of which it has a-bearingiv to providean additional support for the operating handle.

Movement of the operatinghandle 82 is transmittedsto aitrain of gears 167, 168 169, 170, 171 and 172. These gears are all of uniform size and each is turned through one complete revolution at each operation of the machine. The ear 167 is fixed upon a shaft 173. (Fig. 9). This shaft extends through and is journaled in the intermediate frames (i5'and 66, with each end of the shaft projectingfsomewhat beyond the adjacent frame member. The gears 168 and 169 and 171 are idle ears serving merely to transmit motion to-ot er gears in the train. Each is accordingly jounnaled. upon a stub shaft, as 174, which is supported upon and rejects inwardly from the intermediate rame member 66. The gear 170 is fixed upon a cam shaft 17 5which extends through and is journaled inall of the

frame members

63, 64, 65 66.

The cam shaft 175 is supplied with a cam 182 foeturning the shaft 136 to swing the actuating arm 148. As shown, a crank arm 183 is formed integral with the crank arm 161- and projects below the shaft 136. This crank arm carries a cam roller 184 for cooperating-with the cam 182. The gear 172 is fixed upon a cam shaft 176. The cam shaft 176 extends between and is 'ournaled in the

frame members

63 and 66 eyond the forward endof the frame member 65, (Fig. 3).

Themeansprovided for transmitting movement from the operating handle 82 to the gear 167 comprises a curved gear segment 177 (Fig. 2) and a pinion 178 (Fig. 9). The gear segment 177 is formed integral with the inner hub section 163 of the operating handle 82. The pinion 178 is loosely mounted on the shaft 173 and meshes with the gear segment 177 at all times. This pinion is so proportioned in size with reference to the length of the gear segment 17 7 that the pinion is turned through an angular distance slightly in. excess of one complete revolution at each movement of the operating handle. The rotation of the pinion 178 during the forward movement of the 0pcrating ;handle 82 is communicated to the ratchet disk 180 fixed upon the shaft 173 adjacentthe pinion and having a sin le ratchet tooth 181. The movement of t e pinion 178 in excess of one revolution insures that the pawl 179 will pass over the ratcbettooth 181 of the disk 180 during the return stroke of the operating handle 82.

Inl order that the shaft 173' shall be broughttorest in a definite position at the completaonof one revolution after the engagement of the pawl 179 with the ratchet tooth 181', a suita lestop mechanism is desirably provijded As shown, the ratchet disk 180 is formed with an annular enlargem'ent209 (Fig. 9). This enlarged portion of th'edisk 180 is provided with a radially projecting stop lug 210. The stop lug 210.is so positioned as to be engaged with alateral projecting stop lug 211 formed on the gear segment 177 at the completion of the forward stroke of the operating handle 82.

To insure that the operations of the machine shall proceed in their proper order, proi'isioni's'preferably made for preventing any 'iturn movement of the operating hanille encept upon the completion of its forward (stroke; As shown. a stationary ratchet bar"185(I'-ig. 4) having forwardly facing ratchetleeth, is secured against the frame member 64 upon the inside. This ratchet bar cotiperates with a pawl arm 186. For this purpose the pawl arm 186 is formed with a laterally projecting head 187 having a downw'ardlyand forwardly facing oblique cam surface 188 (Fig. 2). The pawl arm 186 is connected with a crank arm 189 which swings. with the operating handle 82. As

shown the crank arm 189 is provided with a hub 190 which fits upon the outer hub section 162 of the operating handle 82 and is secured thereto in angularly adiusted position, as by a set screw 191 (Fig. 3).

\Vhen the parts are in the position of rest (illustrated in Fig. 2). the head 187 of the pawl arm 186 is located beyond the rear end of the ratchet bar 185 and rests upon a horizontal shelf 192 which is formed u on the side of the frame member 64. A eaf spring 193 is secured against the under side of the ratchet bar 185 and normally extends lownwardly and rearwardlv therefrom to a point beyond the rear end of the ratchet bar 185. At the beginnin of the forward stroke of the operatin han le 82, the oblique cam surface 188 of t e head 187 of the pawl arm 186 is engaged with the rear end of the leaf spring 193and the pawl arm is thereupon lifted by a cam action to a position above the ratchet bar 185. The forwardly facing teeth of the ratchet bar 185 accordingly prevent any return movement of the operating handle 82 until the head 187 of the pawl arm 186 has passed beyond the forward end of the ratchet bar. The pawl arm 186 then falls to a position in which its head rests uponthe horizontal shelf 192. During the return movement of the operating handle 82, the head 187 slides upon the shelf 192 and moves under the ratchet bar 185, the leaf springl93 yielding upwardly to permit the head pf'the pawl arm to pass.

In the arrangement shown, printing from the sets of

type

125 and 126 is accomplished by. the operation of hammers 194 and 195, respectively, against the type which are alined withfthe

corresponding platen

58 or 71. The type characters, as 196, (Fig. 14)

of these sets are accordingly mounted for ally separated parallel plates 198, 199. be-

tween whichthe type character, as 19 6. is

slidingly mounted. Springs, as 200, insure the return of the type characters after each -movement of the corresponding hammers,

as 195. These springs are conveniently located between the two side plates 198 and 199 of which the corresponding rim section, as 138, is composed. As shown, a spacing block 201 is fixedin position between the side plat's,'as 198 and 199 in front of the spring and the spring reacts between this block and a laterally projecting shoulder 202, formed upon the corresponding type character, as 196.

The hammers 194 and 195 are arranged in sets, each set including a number of hammers 'equal to the number of wheel segments 128 to 135. The hammers 195 are slidingly mounted for lengthwise movement in a horizontal plane. As most clearly shown in Fig, 9, these hammers slide in ways 203, formed in a bar 204. The bar 204 is supported by being secured against the under side of a tie rod 205 which connects the in

termediate frame members

65 and 66. The operative stroke of each hammer is accomplished by a separate spring, as 206 (Fig. 2) As shown the sprin 206 are formed from flat strip metal folded to substantially a U- shape. Each spring 206 reacts between the forward edge of the tie rod 205 and a shoulder 207 formed on the corresponding hammer.

The retraction of the printing hammers 195 is accomplished'by a cam 208 (Fi s. 2 and 9). This cam is fixed upon the s aft 173 and is preferably made wide enough to be operable upon all of the hammers of the set. As shown, each hammer 195 is pro vided with a downturned end portion 212 which is so formed as to provide a shoulder 213 for engagement with the cam 208. A recessed portion 214 extending entirely across the face of the cam 208 provides for the release of all of the hammers 195 atthe same time,

As it is preferable that zeros should not be printed at the left of the first figure of any item or total, provision is made for restraining the movement of the hammers 194 and 195 which are in alinement with the wheel scgn'ient, as 128 from which no printing is to be accomplished. For this .pur pose the downturned end portion 212 of each hammer 195 is extended beyond the cam engaging shoulder 213 to a position in which it is normally alined with the upturned hooked end portion 215 of a swingi'n lever 216. A separate one of the levers 21 (Fig; 9) is provided for coiiperating with-eat: hammer 195. These levers are piyotally supported upon a rod 217 which extends between and is carried hi the intermediate in: me

members

65, 66. spring 218 is provided for yieldingly supporting the up turned hooked end portion 215 of each lever in elevated position. As shown, each spring 218 has one end connected a tie rod 219 which extends between

thejintermediate frame members

65, 66, :belowthe rod 217. The other end of each spring 218 is connected with a forwardly directed arm 220 of one of the corresponding leversl216.

When printing is to be accomplished from a type character, as 196 of any one of the wheel segments 128 to 135, the corresponding lever 216 is depressed to free the'downturned rear end portion 212 of the corresponding hammer 195. In the arrangement shown, printing is always accomplished from the type of: any wheel segment 128 to 135 which has been rotated by the forward movement of the actuatin arm 148. Furthermore, when but one column of figures is to be printed, zeros should be printed from those wheel segments which have not been moved but which are located at the right of any wheel segment which has been moved, as viewed in Fig. 3. A. cam shoulder 221, formed on each wheel segment 128 to 135, serves for depressing the corresponding lever .216 against the efi'ort of its spring 218 to release the corresponding hammers 194 and 195 when the wheel segment is rotated. As shown, each lever 216 1s provided with an upstanding arm 222 and this arm carries a roller 223 for engagement with the cam shoulder 221 of the corresponding wheel segment 128 to 135*,

The printin of zeros against the platen 71 from wheel segments 128 to 135 which have not been rotated, is accomplished by securing a

rigid leaf

224 or 225 against the under side of each of the levers 216 in such manner that it will extend beneath the next adjacent lever to the right, as viewed in Fig. 9. When but one column of fi res is to be printed, depression of any ever 216 accordingly serves to depress all of the remaining evers to the left, as viewed in Fig. 9, to permit the operation of the corresponding hammers 194 or 195.

To permit the printing of more than one column of figlures provisionis .made for interrupting t e transmission 'of movement between the levers 216 throu h the overlapping leaves 224, 225. Ass own, one of thefleaves, as 225, is downwardly o'flset and s onl actuated upon the depression of .the next. adjacent lever 216 to the right, as viewed in Fig. 9, through an intermediate movable block 226. The action of the levers 216 at one side of the leafv224 to depress the levers which are at its other side, is ac cordingly interrupted by withdrawin i the movable block 226 from between the ownwardly ofi'set portion of said leaf and the underside of the next adjacent lever to the right (Fig. 9). To this end the movable block 226 has a socketed'rear end portion 227 and is supported by the telescopic engagemeut of this socketed end portion with the upper end of.an upright arm 228 of a bell crank lever 229. Ilhe bell crank lever 229 is'pivotally supported upon the floor plate 51 of the case 50,. The other arm, as 230, .of -this lever serves as a handle for withdrawing the block 226 and extends librizontally rearwardv through an opening 231 in the .wall 53 to a conveniently accessible position in rear of the case. If desired, the arm 230 of the bell crank lever 229 may be constructed to yieldingly pass over a shoulder. 232 formed in the margin of the opening 231, in its downward movement to be engaged with said shoulder for holding the movable block 226 in retracted position until released.

Th printing hammers 194 (Fig. 2) are swingingly mounted. As shown they are pivotally supported in alinement upon a tie rod 233 which extends between the

intermediate frame members

65, 66, just above the adjacent rim sections 137 of the wheel segments 128 to 135. Springs 234 are provided for swinging these hammers in the direction of their operative movement. The hammers 194 are moved in the other direction by a cam 235. The cam 235 is mounted upon the cam shaft 17 5 and is of sufficient width to be operable upon all of the hammers 194. The springs 234 have one end connected with a rod 236, Fig. 3, which rejeets laterally inward from the interme iate frame 65 in the direction of but not reach ing to the intermediate frame member 66. The other end of each spring 234 is operatively connected with a forwardly projecting arm 237 of one of the hammers 194. Each hammer 194 is also provided with an upstanding arm 238 so formed as to provide a shoulder 239 for engagement with-the cam 23-5 and to extend upwardly and rearwardly beyond said shoulder to a position above said ram shaft 175. An arm. as 240, formed integral with each lever 216 extends for wardly therefrom and is normally located in alinement with the end of the upstanding arm 238 of one of the hammers 194. The swinging of the levers 216 accordingly serves to'control the operation of the hammers 194 in the same manner as the hammers 195.

To provide against the printing of zeros from the type 127, at the left of the first number of any item or total, the zero characters, as 144 of the type are each movably i. mounted upon the rim section 139 of the corresponding wheel segment 128 to 135 and their position is also controlled by the swinging of the levers 216. As shown, each zero character, as 144 is formed with a laterally offset base portion 246, which is pivotally secured against the side of the corresponding rim section 139, as at 247 (Fig 13). A spring 241 reacts upon each. of these type characters to withhold it from the printing position. A set of hell crank levers 242 are pivotally mounted in alinement with the central shaft 136 and each serves to advance one of the zero type characters 144 when it is required that it should print. As shown one of the arms, as 243, of each bell crank lever 242 is movable against the under side of the corresponding zero character 144. The other arm, as 244 of each bell crank lever 242 is engaged with the arm 240 of one of the levers 216. To insure that movement of each lever 216 in both directions will be imparted to the bell crank lever 242, the arm 240 is provided with a finger 245 which projects upwardly over the adjacent end of the arm 244 of the bell crank lever 242.

The printing movement of the platen 72 toward the type 127 is accomplished by one ofthe cams. as 248, of a cam block 260 (Figs. 9 and 16). This cam block is fixed upon the shaft 173 at one side of the intermediate frame member 65. The cam 248 is operable against a cam roller 249 for shifting a link 250 upon which the roller 249 is mounted. The link 250 is in turn operativelv connected with a crank arm 251 of the rock shaft 76. For guiding the movement of the link 2550 its forward end is bifurcated as at 252 (Fig. 16) and this bifurcated end of the link straddles the shank of a headed stud 253 which is formed upon the end of the cam block 260. A spring 254 reacting between the crank arm 251, and a fixed part of the frame. as the standard 67, serves for holding the roller 249 in engagement with the cam 248 and accomplishing the return movement of the platen 72 away from the ty e 127.

otation of the platen 72 for advancing the strip of paper. as 70, thereover, may be accomplished upon the return of the platen to its normal position of rest illustrated m Fig. 16. As s own, a bell crank lever 255 is pivotally secured against the side of one of the crank arms, as 74, which supports the platen. One arm of this bell crank lever carries a spring pawl 256 for coiiperating with th feeding ratchet 257 of the platen. The other arm of the bell crank lever 255 cotiperates with a fixed cam lug 258 which is formed integral with the standard 67 above the rock shaft 76. Upon the forward movement of the platen 72 toward the type 127 the bell crank lever 255 becomes disengaged from the cam lug 258 and the pawl 256 is retracted. As the platen 72 reaches the limit of its return movement, the bell crank lever 255 is again engaged with the earn 258, and the pawl 256 is advanced for rotating the platen.

The rotation of the platen 71 for feeding the strip of paper, as 69 thereover. is conveniently accomplished by a cam 259. As shown. this cam is mounted on the shaft 173. as by being formed upon the same cam block 260 with the cam 248. The cam 259 operates against one end of a lever 261 which is pivotally secured against one side of the standard 67. A spring pawl 262 is mounted upon the other end of the lever 261 for cooperating with the feeding ratchet 263 of the platen 71. A spring 264 reacts between the lever 261 and the standard 67 for withdrawing the pawl 62 from enga ement with the feeding ratchet 263, and ho d ing the lever in engagement with the cam 259.

The yielding gear teeth or pawls 142 with which each wheel segment 128 to 135 is provided serve for rotating the item wheels 8 and the accumulator wheels 79 (Fig. 2). The pawls 142 of each set are pivotally secured against the rim section 140 of the corresponding wheel segment. as by set screws 265. The movement of each pawl in one direction is limited by a stop pin 266 which is fixed in the rim section 140 adjacent the pawl. The pawls are yieldingly held against these stop pins, as by means of springs 267 which react between each two adjacent pawls.

The item wheels 78 are rotated in one direction only by the corresponding yielding gear teeth or pawls 142. A spring 268 (Fig. 12) is accordingly employed for rotating each of these wheels in the opposite direction. As shown, the item wheels 78 are arranged in alinement upon a fixed shaft 269 which extendsbetween the side frames 63. 64, adjacent the sight openings 80 in the front wall 52 of the case. Spacing collars 270. alternating with the item wheels 78. are fixed upon the shaft 269. Coiiperating stop lugs 271 and 272. Fig. 11, formed on each item wheel 78 and the adjacent spacing collar 270 serve to prevent further rotation of the item wheels 78 in one direction, when the hero characters, as .273, are in register with the sight openings 80; Each spring 268 is coiled about the hub of the corresponding item wheel 78 and reacts between the item wheel and the adjacent spacing collar 270 for turningthe'whecl to bring the stop lug 271 against the stop lug 272.

The accumulator wheels 79 are. loosely mounted upon a shaft 277 which extends hetween the side frames 6.3. 64, adjacent the sight openings 81in the front wall 52 of the case. Each of these wheels is conveniently made of such size as to comprise two sets of numerals 274, .275, Fig. 5, and a corresponding number of gear teeth 276 Fig. f6. Carrying mechanism for advancing each accumulator wheel .79 through an an lar distance corres onding tothe'spacing of'its gear teeth 276, when the next wheel to the right, as viewed inrFig. 5, completes a half revolution of movement, is accordingly required. As shown, star wheels 278, one meshing with the gear teeth 276. of each of thd accumulator wheels 79 except the last one to the right, as viewed in Fig. 5, are employed. T hesc star wheels are loosely mounted upon a shaft27'9 which has its opposite ends supported in bracket lugs 280 f( rmed on the side frames ca ana 64. Each star wheel 278 is made wide enough "to engage with the gear teeth 276 of thejcorrespending Wheel 79 and to project beyond the adjacent side of the same. 'Afpair of diametrically opposed studs281 and 282 are fixed in each wheel 79, except the, last one to the left, as viewed in Fig? 5, for engaging the adjacent star wheel 279 at each half revolution of the accumulator wheel in which they are respectively mounted.

The yielding gear teeth 142 with which the wheel segments 128 to 135 are supplied, provide that the item wheels 78 and accumulator wheels 79 are turned during the rotation of the several wheel segments" to the left, as viewe in Fig. 2. When the accumulator wheels are supplied with the form of carrying mechanism shown, is required that they be rotated successively beginning at the right, as viewed in Fig. 5. As the actuating arm 1&8 serves to simultaneously advance all'of the wheel segments 128 to 135 upon which pins 141 have been depressed, it is accordingly provided that these wheel segments are returned one at a time.

A cam shaft 283 having a plurality of cam arms 2 84 serves for effecting; the return movement of the wheel segments 128 to 135. The cam arms 284" are arranged along the shaft 283 "and are angularly spaced apart thereon for successive engagement with the wheel segments 128 to 135. The cam shaft 283 preferably extends from the intermediate frame 65 through the intermediate frame 68 to the side frame 64 and is journaled in all three of these frame members.

For rotating the cam shaft 283 a pinion 285 is mounted thereon and this pinion meshes with an intermediate gear 286. The intermediate gear 286 is rotatably supported against the side frame member 64 and meshes with a driving gear 287. This driving gear 287 is rotated through one fourth of a revolution at each movement of the operating handle 82, such motion occurring near the completion of the forward movement of the handle. As shown, the driving gear 287 is fixed upon a shaft 288. This shaft extends between the intermediate frame 68 and adjacent side frame 64 and the two ends of the shaft are journaled in said frames.

Motion is communicated to the shaft 288 and driving gear 287 from the cam shaft 175. For this purpose a star wheel mechanism, illustrated in Fig. 7, is employed. This star wheel mechanism includes a pair of

disks

289 and 290 of difi'erent size. These disks are preferably formed integral and they are mounted'on the cam shaft 175. The star wheel, as 291, is mounted on the shaft 288 and has a plurality of radial sockets 292 and intermediate curved surfaces 293. A stud 294 projects laterally from the larger one, as 289,015 the two

disks

289, 290 for entering the socket 292 of the star wheel 291 to turn the same. The rim of the "smaller disk290 is normally engaged with one of the curved surfaces 293 of the star wheel 291 t-o hold the same against movement but is provided witha notch 295 to permit the turning of the star wheel during that part of each revolution of the shaft 175 when the stud 294 is engaged with one of the sockets 292.

The clearing of the item wheels 78 preferably occursat the beginning of each operative movement of the handle 82. For this purpose it is only necessary to release the pawls 142 from engagement with the item wheels 78, the rotation of the wheels being then accomplished by the springs 268. The release of the pawls 14.2 is effected by means of shoes 298, one operatin against the rear end portions of the paw s 142 of each wheel segment 128 to 135 in line with the corresponding item wheel 78. As shown a crank shaft 296 (Fig. 4) extends between the side frames 63, 64, over the item wheels 78. This crank shaft carries a plurality of crank arms 297 one of which extends inwardly adjacent the rim section 140 of each of the wheel segments 128 to 135. Each of the crank arms 297 carries one of the shoes 298 upon its free end. A cam 299 carried by the cam shaft 175 adjacent the remote end of said shaft from the cam 182 serves to swing the crankshaft 296 for advancing the shoes 298. As shown, a three-armed lever 300 is pivotally mounted on the shaft 136 adjacent the cam 299. One arm of this lever is supplied with a cam roller 301 for engagement with said cam. Another arm of the lever 300 is connected with a crank arm 302 of the crank shaft 296, as by a link 303. A projection 304- (Fig. 10) formed on the cam 299 serves for swinging the lever 300 at the beginning of each rotation of the cam shaft 175.

Preferably the same movement of the three-armed lever 300 which permits the clearing of the item wheels 78 also serves to permit the restoration of the numeral keys 83. As shown, a sliding bar 305 eX- tends transversely below the rear end por tion of the cover plate 56 for simultaneously rotating all of the lockin plates 108, Fig. 8.

The bar 305 is provided with an upstanding lug 306 for engaging each of the locking plates 108. The bar 305 is conveniently sup orted by having its opposite ends slidingy connected with bracket lugs, as 307, which rise from the supplemental plate 112. An arm 308 projects downwardly from the sliding bar 305 through a slotted opening in the supplemental plate 112 and into the path of a cam 309 which is carried by an oscillating bar 310. The oscillating bar 310 can tends transversely through the machine over the rear end portions of the pin restoring levers 158 (Fig. 2). The opposite? ends of the oscillating bar 310 are connected to a rock shaft 311, as by crank arms 312. The rock shaft is rotated by movement of the three-armed lever 300 (Fig. 10) and a link 313 which serves for connecting one of the crank arms 312 with one of the arms of the lever 300.

\Vhile an upward movement of the oscillating bar 310 serves to permit the restoration of the numeral keys 83, a downward movement of this same bar serves to swing the levers 158 for restoring the pins 141. This last mentioned movement of the oscillating bar 310 normally occurs just prior to the completion of each operative movement of the handle 82 and is conveniently accomplished by a spring 314 (Fig. 10). The spring 314 acts upon the lever 300 to hold the roller 301 against the cam 299. A depression 315, formed in the rim of the cam 299, permits the sprin 314 to swing the lever 300 through a su cient distance for effooting the restoration of the pins 141.

When it is desired that an item once set up by the numeral keys 83 should be repeated during successive movements of the operating handle 82, the restoration of the pins 141 is prevented. This is accomplished by the depression of the repeating key 94, (Fig. 1). Downward movement of the stem 101 of this key serves to swing a stop arm 316 (Fig. 10) into the path of a lug 317 formed on one of the arms of the lever 300 to prevent the movement of the lever 300 by the spring 314 for the entrance of the cam roller 301 into the depression 315 of the cam.

The stop arm 316 is preferably constructed in. the form of one of the crank arms of a tubular rock shaft 316*. This rock shaft is pivotally supported upon a stud 318 which projects inwardly from the adjacent side frame 63. When so constructed a bracket lug 319 formed on the tubular rock shaft 316 serves to provide an anchor for the spring 314. This bracket lug is so positioned on the rock shaft 316 that the spring 314 serves the additional function of normally holding the stop arm 316 out of the path of the lug 317. A link 320 extends forwardly from another crank arm, as 318" of the rock shaft 316*. The forward end of this link is connected with one of the crank arms 321 of a second tubular rock shaft 321. This rock shaft is also supported upon a stud, as 322 which projects inwardly from the side frame 63. A lug 323, carried by another crank arm, as 322' of the rock shaft 321, extends into the path of a cam 324. This cam is carried by the stem 101 of the repeating key 94.

A latch mechanism is preferably provided for holding the key 94 in depressed position. As shown, a spring advanced latch bolt 325 slidingly extends through the front wall 52 of the case and is provided with a push button 326 at its forward end. The rear end of the latch bolt 325 is formed into an eye 327 for receiving the key stem 101 and one wall of this eye is made chamfered to form a detent 328 for engagement with a notch 329, in the stem 101. In order that the pins 141 may be automatically restored after any operation of the machine has been repeated the desired number of times, the push button 326 is preferably depressed to release the key 94 before swinging the handle 83 for the last one of said operations. Should the depression of the push button 326 be omitted, and the repetition of operations be thereby completed without restoring the depressed pins 141, it will be necessary to depress the blank key 93 which is associated each subtraction pinion is so positioned as to be engaged with the gear teeth 276 of the corresponding accumulator wheel 79 at all times, but is normally located at one side of the path of movement of the yielding ear teeth or pawls 142 of the corresponcing wheel segment 128 to 135 To this end, the subtraction pinions 332 are mounted in alinement upon a longitudinally movable shaft 333. A pair of

collars

334, 335, fixed uponthe shaft 333 adjacent its Opposite ends, serve to insure the axial movement of the pinions 332 with the shaft in both directions. The shaft 333 extends between and is slidingly journaled in the side frames 63 and 64. One of the collars, as 335, provided with an annular groove 336, and this groove is entered by one of the crank arm's, as 337, of a rock shaft'338. The rock shaft 338 is supported by being journaled in a bracket 339, '(Fig. 2), which is secured against the side frame 64. Another crank arm, as 340, ofthe'rock shaft 338 ex tends into the path of a stud 341 which is mounted on the stem 104 of the subtraction key 97. 2 Depression of the subtraction key 97 accordingly serves to move the shaft 333 in one direction. A spring 342 reacts between the crank arm 337 and the side frame 64 for moving the shaft 333 in the other direction. I

For holding the accumulator wheels 79 against accidental movement, the subtractionpinions 332 are engaged by a holding bar 343 Fig. 2). This bar extends from side to si e of the machine below the shaft 333 and is supported at its opposite ends upon a pair of crank arms 3'44 which are 'fixed upon a tubular rock shaft 345,, and project forwardly therefrom. The tubular :rock shaft 345is sleeved over a crank shaft 346 which extends from side to side of the machine and has its opposite ends journaled in the

side frame

63 and 64. In addition I to the forwardly extending crank arms 344,

the tubular rock shaft 345 is also provided with a rearwardly. extending crank arm 347 (Fig. 3'). This'last mentioned crank arm is supplied with a cam roller 348 for engagement with a cam 349. The cam 349 is shiftably mounted upon the cam shaft 176. Ithas aplurality of

elevated portions

350, 351, 352 and 353, all of which are provided for engagement .With the cam roller 348 to release the holding bar 343 from engagement with the subtraction pinions 332 in the different positions of the cam. In the ordinary operation of the machine, as when the sum of the several items is to appear upon the accumulator wheels 79, the cam349 occupies the position illustrated in Fig. 3. In position of the cam, its elevated portion 350is engaged with the cam roller 348 during the latter part of each rotation of the cam shaft'l76. The holding bar 343 is theregesta t-o by released from engagement with the sub traction pinions 332 to permit the rotation of the accumulator wheels 79 by the pawls 142 only during the return movement of the wheel segments 128 to 135*.

In the event an item is to be subtracted, the subtraction wheels 332 are shifted into the path of movement of the pawls 142 of the corresponding Wheel segments 128 to 135 and the paWls are depressed as they pass the accumulator wheels 7 9, during the return movement of the wheel segments. This depression of the pawls 142 is accomphshed through the use of a plurality of shoes 354 (Fig. 2), one for engaging the rear end portions of the pawls of each of the wheel segments 128 to 135*. These shoes are supported in alinement upon a bar 355, and they are brought to operative posi tlO'Il by moving the bar forwardly. As shown, the bar 355 is carried by a pair of crank arms 356. These crank arms are fixed upon the crank shaft 346, beyond the ends of the tubular rock shaft 345 by which the crank shaft 346 is inclosed throughout the greater portion of its length. An arm 35?,

ormed integral with one of the crank arms 366, extends rearwardly therefrom and carmes a cam roller 358 which also coiiperates wlth the cam 349. The cam 349 is provided with two elevated portions 359 and 360 for engaging the cam roller 358 in different positions of the cam.

The shifting of the cam 349 on the cam shaft 176 is accomplished by the depression of any one of the

controllin keys

95, 96, 97, but in different amounts. or thispurpose a shipper bar 361 (Fig. 5), is slidingly supported to extend in rear of the stems 102, 103, 104 of said keys. This shipper bar carries three

studs

362, 363 and 364, each of which extends into the path of one of three Wing cams 35.6, 366 and 367, which are mounted upon the key stems 102, 103 and 104 respectively. One support for the shipper bar 361 is provided by a gib 368 which connects with an upright part, as 369, of the bracket plate 106. The shipper bar 361 IS SllSO supported by beingslidingly engaged w th the side frame 64. The motion of the sh pper bar 361 is communicated to the cam 349 by means of a yoke 370. This yoke is formed upon one end of a shipper'bar 361 and 1s engaged With an annular groove 371 formed in the hub of the cam.

A latch mechanism is preferably provided for holding any one of the controlling

keys

95, 96, 97 which has been depressed, inits lowered position until the operating handle 32 reaches the endof its forward movement.

For this purpose a plurality of pawls372 are provided.

These pawls are rigidly mounted on rock shaft37 3, randrare normallyadvanceil by a spring 377 which operates to rotate the shaft in one direction. Each pawl 372 is adapted to enter either one of two notches 374, 375, formed in the

stem

102, 103, 104 of one of the controlling

keys

95, 96, 97. The rock shaft 373 is supported by being journaled in the upright part 369 of the bracket plate 106 and in a second bracket arm 376 which rises from this plate. For effecting the retraction of pawls at the end of the forward movement of the operating handle 82, the rock shaft 373 is provided with a crank arm 378 and a link 379 extends rearwardly therefrom. The rear end of the link 379 is connected with a swinging arm 380, and a pin 380 (Fig. 3) projects laterally from this arm under the gear segment 177. A lug 381 (Fig. 2), formed on the gear segment 177, engages the pin 389 to swing the arm 380 rearwardly, as the gear segment 177 reaches the limit of its travel. The swinging arm 380 is supported by being pivotally secured against the side frame 64. hen the subtraction key 97 is depressed, the cam 349 is shifted to a position in which its elevated portions and 360 are alined with the

cam rollers

348 and 358, respectively. The cam 349 accordingly serves to effect the depression of the holding bar 343, and the advance of the shoe 354 during the return movement of the wheel segments 128 to 135 The depression of the subtraction key 97 having also served to shift the subtraction wheels 332 to a position in which they are alined with the pawls 142 of the wheel segment 128 to 135, each accumulator wheel 79 is rotated in accordance with the movement of the corresponding wheel segment but in a reverse direction with reference to the movement of these wheels when they are directly engaged by the pawls 142.

When a total or a sub-total is to be printed against the

platens

58, 71 and 72, (or shown at the sight openings 80) none of the numeral keys 83 is depressed. The movement of the wheel segments 128 to 135* is accordingly accomplished, not by the engagement of the actuating arm 148 with the pins 141, but by the clearing of the accumulator wheels 79, as these wheels are rotated to positions in which they display zeros at the sight openings 81. The clearing of the accumulator wheels 79 is accomplished by the engagement of a gear segment 382 (Fig. 4) with a gear 383 which is fixed upon the shaft 277. The gear segment 382 is formed upon a crank arm 384 which rotates with the shaft 136, as by being formed integral with one of the crank arms, as 161 upon which the actuating arm 148 is mounted. The gear 383 is so positioned on the shaft 277 as to be normally out of alinement with the gear segment 382. Provision is accordingly made for im arting an endwise movement to the shaft 2 7 when a total or a subtotal is to be printed. For

this purpose, the hub of the gear 383 is provided with an annular groove 385 and one of the crank arms, as 386, of a rock shaft 387 is engaged with this groove. The rock shaft 387 is supported by being extended longitudinally through a part of the side frame 64. Another crank arm, as 388, of the rock shaft 387 extends into the path of

studs

389 and 390 which are carried by the

stems

102 and 103 of the total and

subtotal keys

95, 96, respectively.

At each engagement of the gear 383 with the gear segment 382, the shaft 277 is rotated only through a sufiicient distance to bring one of the zero characters of each of the accumulator wheels 79 into register with the corresponding si 'ht opening 81. This motion of the shaft 2%7 is communicated to the several accumulator wheels by providing the shaft with pins 391 (Fig. 5) which come into engagement with studs, as 392, fixed in the accumulator wheels during the rotation of the shaft. The endwise movement of the shaft 277 to the right, as viewed in Fig. 5, is preferably accomplished by a spring, as 393. This spring is shown as being coiled about the shaft and reacting between the hub of one of the accumulator wheels 79 and a disk 394 serves to carry the pins 391 which engage the studs 392 of the adjacent accumulator wheel.

hen a total is printed, the accumulator wheels 79 are allowed to remain in the cleared position. It is accordingly provided that the pawls 142 of the wheel seg ments 128 to 135, are depressed, as they pass the corresponding accumulator wheels, during the return movement of the wheel segments. For this purpose, the wing cam 365 (Fig. 5) serves to shift the cam 349 to a position in which its elevated portion 359 (Fig. 3) is alined with the cam roller 358 for advancing the shoes 354 (Fig. 2) during the latter part of the rotation of the cam. In this operation of the machine. the rotation of the accumulator wheels 79 occurs during thedownward movement of the gear segment 382 (Fig. 4) and is not thereafter to be permitted. The cam roller 358 (Fig. 3) is accordingly engaged by an elevated portion 352 of the cam 349 for depressing the holder bar 343 only during the ea rly part of the rotation of the cam.

\Vhen a subtotal is to be printed, the accumulator wheels 79 are cleared by the engagement of the gear 383 with the gear segment 382 (Fig. 4), in the same manner as when a total is to be printed, but in this operation the accumulator wheels are to be returned to their original position during the return movement of the wheel segments 128 to 135*. The wing cam 366 (Fig. 5) which is depressed by the depression of the subtotal key 96, accordingly serves to shift the cam 349 (Fig. 3) only to a position in which t'he elevated portion 351 of :the'cam is aiined with the cam roller 348. The elevated portion 351 extends almost entirely around the cam 349 and thereby serves to depress the holder bar 3&3 to permit the rotation of the accumulator wheels 7 9 throughout substantially the whole iperiod ingthe cam roller 358 when occupying that position'to which it is moved by the wing cam 366 (Fig. 5) of the sub-total key. The rigid connection'of all of the pawls 312 with the shaft 373 provides that if one of the con- "

trolling keys

95, 96 or 97 is improperly depressed its restoration will be permitted by the depression ofanother one of said keys.

\I claim asimy invention,-

11. In acalculating machine, in combina tion, an oscillatable number positioning r-member, a set of numbers positioned there- 'by, an accumulator, driving'means positively goperable upon the number positioning memher to 'move it through variable distances, other driving means operable upon the accumulator for :moving it to a definite position and connection betweenthe'number positioningmember andthe accumulator operable to communicate motion from either one of said .partsto the other.

2. Ina calculating machine,;in combination, a number positioning wheel, a set of numbers positioned thereby, an accumulator wheel, driving means positively operable upon the number positioning wheel for turning it through variable angulardistances'in one direction, means for turning the number positioning wheel through like distances in the other direction, other driving means operable upon the accumulator wheel for turning it to a definite angular position and connection between the said two wheels operable to communicate motion from the accumulator wheel toithe .numberipositioning wheel and from the number positioning wheel \to the accumulator wheel in one direction only.

3. In a calculating machine, in combination, a number positioning wheel, a set of numbers positioned thereby, an accumulator wheel, means for oscillatingthe'numberzpo- 'sitioning wheel, connection between said wheels positively operable for communicating motionfrom one'to'the other in one direction but yielding when the number positioning wheel is moved in the other direction by the saidoscillatingmeans, and driving means for reverselyturning the accumulator wheel with reference to the direction in which itis turnediby the means for oscillating the number positioningwheel.

4. In a calculating machine, {in combination, an oscillatin number positioning wheel, a set of num :ers positioned thereby, an accumulator wheel, driving means ,positively operable upon the number apositionin'g wheel for advancingthe number positioning wheel, means for returningthenumber positioning Wheel, connection between said whcels operable only to CGIHIDHIllCflbB'IHDhlOB from the number positioning wheel to the accumulator wheel during the return movement of the number positioning Wheel and t'rom the accumulator wheel to the snumber positioning Wheel for advancing the number positioning wheel, and other driving means operable upon the accumulator wheel for turning the same in the direction for advancing the number positioning wheel.

5. In a calculating machine, in combination, an oscillatin number positioning wheel, a set of num ers positioned thereby, an accumulator wheel, driving means-positively operable upon the number positioning wheel for advancing the numberrpositioning wheel, means for returning the number positioning wheel, connection between said wheels operable-only tocommunicate motion from the number positioning wheel to the accumulator wheel during the return move 'ment of the number positioning wheel and from the accumulator wheel to the number positioning wheel for advancing the number positioning wheel, other driving means means operable upon the accumulator wheel for turning the same in the direction for advancing the :number positioning wheel, and means for releasing the said connection between the wheels during the return movement of the {number ,positioning wheel nextlfollowing itsadvanceby the said rotatinn of the accumulator wheel.

6. In a calculatingmachine, in combination, a movable type S8le'CtlI1g m8mbeI',"B fixed stop located adjacent the path of movementof said type selecting member, an actuating member-1 movable tow ard the stop, and a set'of studs carried by thesaid type selecting member (and movable thereon ato I enter thepath, of movementiofthe actuating member atidiiferent distaneesfrom the stop.

7. In a calculating machine, incombination, a movable set of number characters, meansforrmoving thesetof number-characters'in variable amounts and forrtator'mg the set of number characters after "each movement, means upon which the restoring JIlOVBIRQIItS of the set'of number characters are accumulated, means for restoring the accumulating means, ineans [for transmitting 'the restoring movement of the accumulating means to the said set oflnumbercharacters, and means for interrupting the transmission of the restoring ,movement 'of .the said set of number characters to thenccumnhting