US1395991A - gascon - Google Patents

Description

M. F. GASCON.

ADDING MACHINE.

APPLICATION FILED FEB. 7. 1919.

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4 SHEETS-SHEET l- Patented Nov. 1, 1921.,

M. F. GASCON.

ADDING MACHINE.

APPLICATION FILED FEB-7,1919.

1,395,991 Patented Nov. 1, 1921.

Q 4 SHEETS-SHEET 2.

4. 11v VE/VTOR 41,94 TTORNE YS M. F. GASCON.

ADDING MACHINE.

APPLICATION FILED FEB-7,1919.

Patmtefi Nov. 1, 1921.

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ADDING MACHINE.

APPLICATION FILED FEB. 7, 1919.

UNITED STATES PATENT OFFICE.

MALCOLM F. GASCON, OF DETROIT, MICHIGAN, ASSIGNOR TO IBURROC'GHS ADDING MACHINE COMPANY, OF DETROIT, MIC

HIGAN, A CORPORATION OF MICHIGAN.

ADDING-MACHINE.

To all whom it may concern:

Be it known that I, MALCOLM F. GAscort, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Adding-Machines,

of which the following is a specification.

My present invention relates to the printing department of an adding machine and the object is to provide for automatic control by the laterally shiftable paper carriage in the matter of elimination of imprints.

Machines of the character with which this invention is concernedare equipped to do tabulating work as for example in the making of book entries upon loose leaf ledgers, and such work frequently requires subdivision of the printing mechanism, as for the printingof date, folio number and amount, and the work in hand may require that printing be omitted with the carriage in one or another of its columnar positions, that is to say printing by one or moreor all of the subdivisions of the printing mechanism.

In recent developments of machines of the kind here concerned as high degree of automaticity as may be practicable is sought and this involves avoidance of repetition in fingering for setting up of matter which may. require printing more than once in the same tabulatlon. At the same time not all of the matter so set up and maybe not any of 'it should be printed at a certain position or at certain positions in which the paper carriage may stand as the tabulation procee'ds.

By my present invention I make provision for the exercise of a control, through the agency of fixtures upon the paper caras the familiar spring-driven hammers belonging to different subdivisions of the printing department of the machine.

In the. drawings which accompany and form part of this specification Figure 1 represents a sectionalized left side elevation of a machine of the familiar Burroughs type, with parts not necessary fora complete (11s- 'closure of the invention, omitted, the portion at the rear below the .paper carnage being taken on the section line 11 of Fig.

v2; Fig. 2 is a horizontal section taken sub:

stantially on theline 2-2 of Fig. 1; Fig. 3 is'a rear elevation'showing the lower portlon of the paper carriage and certaln assorlage, over impression-making devices, such- Specification of Letters Patent. Patented Nov, 1, 1921, Application fil'ed February 7, 1919. Serial No. 275,538.

ciated parts; Fig. 4 is a sectional elevation of some of the parts appearing in Fig. l but at an advanced stage in an operation of the machine; Fig. 5 is a perspective view of certain elements of the carriage-controlled mechanism; Fig. 6 showsother elements thereof in perspective; Fig. 7 is a detail sectional view taken on the line 7-7 of Fig. 2, and Fig. 8 shows an example of work.

The machine proper requires no description, being thoroughly familiar to those skilled in this art, and this applies also to the general characteristics of the paper carnage. It may be well to further state that in the prior application of one Robert L. Muller, Serial No.- 268,064, filed'December 23, 1918, there is disclosed a machine with carriage-controlled mechanism inclusive of that now made the subject of the present application, andthe example of work supcorresponding with those of the latter to designate corresponding parts.

There isthe usual tabulation rod 9 journaled in the side pieces 8 of the paper carrlage and carrying stop finger or dogs 12 to cooperate with the fixed stop 13 on the back panel of the machine casing. Then, as in.the Muller application, there is another and non-rotary rod 10 mounted in said carriage side-pieces somewhat above and rearward of the tabulator rod 9, and'this rod 10 carries adjustable collars 14. These collars support rollers 72, 30, 41 and 75 of varying dlameters. While these rollers correspond in function with those similarly designated in the Muller application, it should be noted that the present disclosure does not duplicate that of said application in the matter of multiplicity of rollers in. different setsand their adjustability, which is characteristic of the Muller invention.

So far as the present invention 1s concerned 'fects governed by differing diameters of the rollers,'the greater the diameter of the roller the greater the d gree of: pression of the said lever arm. The degree of depression of this arm determines the extent to which the printing mechanism of the machine will be disabled. The printing department of the machine, as here shown, particularly in Fig. 2, is subdivided into three sections, one of which may be considered as devoted to the printing of dates, another to the printing of folio numbers, and the third to the printing of amounts. Under the particular arrangement here shown, and having reference to the example of work supplied by Fig. 8, depression of the lever arm 7 to the least extent, as by the smallest roller 72, results in the disabling of only the middle section of the printing devices, to wit, those allotted to folio printing, whereas depression of said lever arm to the greatest extent, as by roller 30, results in I disabling all three sections of the printing mechanism. Depression of said lever arm to the medium extent,'a by either the roller 41 or the roller 75, results in disabling the date and folio sections of the printing mechanism.

The printing mechanism proper is that long familiar in Burroughs adding machines, comprising a gang of hammers 715 and hammer driving levers 716 and latches 717 which normally restrain the hammers.

The splitting or sub-dividing is done in the usual way by omitting overlapping tails between latches, and in the present instance the split' is a permanent one. However, certain devices of the same character as the couplings shown in the Vincent Patent 1,166,096 of December 28, 1915, are employed for purposes of the so-called hammer blocking. There is not actual blocking of hammers, as in the construction of the said patent, but, the principle of imprintelimination set out in the Gooch Patent 925,805 of June 22, 1909, is followed,.z'. e. printing is prevented by early release of hammers so that they are deprivedof percussive function. r

I have before pointed out that the printing mechanism of the machine is sub-divided into as many as three sections. Then the first or date section of theprinting mechanism is itself sub-divided, in so far as concerns cooperative tripping action between the first and second latches, inasmuch as there should of course be no cipher 'ated upon by said bail cross bar.

717*, and there is a catch 717 pivoted upon. I

this pitman, said catch being normally upheld by a spring 717 In the present instance the catch has a lateral stud 717 (Fig. 7) which, when the catch is depressed, will take a position in front of the laterally turned end of a pitman 717 .that is pivotally connected at its forward end to the first latch 717. This condition is illustrated in Fig. 4. f

Thecatch 717 has a shoulder a (Fig. 4) on its underside which is normally above the path of movement of the cross bar 160 of a bail-which is vibrated in every operation of the machine. When the catch is depressed (through connections presently to be described extending from the hammer block.,lever arm 7) the said shoulder is rought into the path of said cross-bar, so that at the outset of the operation of the machine the pitman 717 willbe drawn rearward and with it the pitman 717 and so the three latches of this section of the printing mechanism will be tripped and their hammers released and thereby deprived of percussive function,the third latch being trip' ed by the tail of the second or middle is applied to the middle latch of the firstdescribed section, and likewise a catch 717 of the same sort, and furthermore thiscatch is adapted, when depressed, to be operated upon by the same bail cross-bar already described. The effect will be, of course, to trip all of the latches of the second section of the printing mechanism and deprive their hammers of percussive function so that printing is prevented. The remaining, or amount printing section of the printing mechanism, similarly has a pitman 717 and catch 717 connected with the latch controlling the first of its hammers, and its catch, too, is adapted, when depressed, to be oper- These three catches above referred to, may be selectively or collectively depressed, so that the middle section of the printing mechanism may be alone disabled, or the date printing section may be disabled along with it, or all three sections of the printing mechanism may be simultaneously disabled.

The variable depression or setting of catches is done through the turning of arod 170 journaled inthe side pieces of the frame of the printing department. Thus said shaft carries lugs for depressing the catches,

there being three such lugs 170 (Fig. 6) longitudinally alined for simultaneous action upon the three catches, and two such lugs 17 0 for simultaneous action upon the catches of the date printing and folio printingsections of the printing mechanism, and a single lug 170 for depressing the catch of the latter section alone.

It will be recalled that the hammer block lever arm 7 is lowered varying degrees according to the size or diameter of the carriage roller ,riding upon it, and it is now in order to state that thislever arm is ooordinated with said rotary rod 170 through appropriate connections so that upon the degree of depression of the lever arm will deor pend the extent of disabling of sections of the printing mechanism. Said arm is spaced considerably from the back panel of the machine casing so as to aline with the rollers, and it is formed as a side piece of a yoke 7 running below a long supporting stud 3 secured to said panel (Figs. 1 and 2). An enlarged portion fits against the latter and a reduced portion of said stud extends through it (with a flattened side to prevent its turning) and a further reduced portion is screw-threaded to receive a clamping nut 3. A collar 3 intervenes and an inner arm 7 of the yoke vjournals on this collar. The outer yoke-arm 7 journals on a shouldered screw 3 tapped into outer end of the stud.

Said arm 7 is bent into close proximity to the back panel and has its end notched to embrace the short rearwardly projecting arm of a bell crank lever '17 8 pivoted at 179 and carrying upon its upstanding longer arm a supplementary arm 181 pivoted'intermediate its length at the point 180, said supplementary arm 181 being spring-connected below its pivot to the long arm of the bell crank lever 178 and being notched'at its extremity above the pivot to embrace a stud on the rear end of a slide bar 182. The latter has arack 182 on its upper edge at its front portion in mesh with a small gear or pinion 170 on the rod 170. j

The hub of the gear journals in one side plate of the printer frame, as shown in Fig. 2, and has prongs 170 (Fig. 6) engaging a slot in the enlar ed end of rod 170. A screw 170 secures the parts, being run through the gear and tapped into the rod. The other end of the latter receives a screw 170 which is shouldered and supplies a trunnion journaled in the plate at this side of the printer frame.

It will be obvious that through above described connections depression of the hammer block lever arm more or less will result in sliding the bar 182 rearward and turning the rod 170 to a greater or less extent. (The compound make-up of the operating bell crank lever, with the yielding form of connection between its elements, is merely for safety purposes in case of a lock-up.)

A spring 191 is applied to the bar to normally hold it forward, and to consequently elevate the'lever-arm 7,-such normal condition constraining the rod to occupy the idle position, shown in Fig. 7, where none of its projections 170, 170 or 170 is in action. Rearward shifting of the rack bar, as brought about by depression of the lever-arm 7 by the smallest roller 72, would cause the single projection 170 to depress the catch 717 with the result'of disabling only the middle section of hammers. Depression of the lever-arm by a middle-sized roller (41 75) would, bring the two projections 170 into action to addltional'ly depress the catch 717, as shown in Fig. 4, and so result in disabling both the first (date) and second (folio number) sections of the printing mechanism. Depression of said lever-arm to the maximum extent (by the largest roller 30) would bring the projections 170. into action, depressing all three catches 717, 717 and 717 with the result of disabling all the printing hammers.

The slide bar 182 is suitably slotted to embrace supporting and guiding roller studs on the frame-work, the same being desig mated 192. Inthe under-side of this slide barthere are formed four notches 182,

which define the different positions of the slide bar and serve,'in conjunction with a locking pawl, to insure its proper positioning and its being held positioned during an operation of the machine. The locking pawl is in the form of a slide plate 195 mounted against one of the side plates of the printer frame and V-shaped at its upper end for engagement with one or another of the notches. A spring 196 applied to this slide.

plate tends to draw it upward into engagement with the notched slide bar. Normally this locking pawl is restrained by a stud 197 carried by a bell crank 197 which constitutes one element of a train of mechanism for vibrating the bail whose crossbar 160 operates upon any depressed catches. In the standard construction of the Burroughs machines there is a plate 801 fastened to a drive shaft 800 and a link 802 which operates customers old balance is set-up and the maextending arm of said bell crank (Fig. 1)

5 piece 160 of the bail of which said crossbar 160 is a part.

At the outset of an operation of the machine the roller stud 802 elevates the long arm of the bell crank lever 197, straightening the before-mentioned toggle, rocking the lever 198, and lowering the link 199 so that the bail 160160 is swung forward, and will therefore trip any latches whose catches have been depressed into the path of movement of the bail cross-bar 160 (Fig. 4). It will be noted also that the elevating of the long arm'of said bell crank raises the stud 197 so as to release the locking pawl 195 and permit it to engage the registering notch 182 of the bar 182.

Referring now to the example of work represented by Fig. 8, and assuming that a ledger sheet A is inserted in the paper car-.

riage of the machine, and that alongside of 25 itto the left there is inserted a customers -statement sheet B, the paper carriage will be first moved by hand to its extreme left hand position wherein the roller 75 may function to prevent any date or folio printing; With the carriage in this'position, the

chine operated once to print and register that amount. In the example here given it appears first as $500 and is printed on the top line of the'ledger sheet at the extreme right. The registering mechanism of the machine is, of course, in adding condition at this time. The paper carriage is then moved by hand to its extreme right 40 hand position wherein the left hand or charge section if the customers statement sheet is in position to be printed upon. In this position of the carriage the roller, 72 stands over the lever arm 7. The date, folio number, and amount to be charged, are set up on the keyboard and the handle operated whereupon the machine goes through a cycle of operations, and as the lever arm 7 is depressed to the least extent, the date and amount will be printed but. the folio number will not'be printed (such entry has no place on the customers statement). The paper carriage is released at the end of the operation (through familiar tabulating action) and moves over to the next columnar position in which the right hand section of the customers statement stands opposite the printing type. In this new position the large diameter roller 30 depresses the leverof which the entire printing mechanism is disabled so that there will be no printing upon the customers statement (it will be understood that this right. hand section of the customers statement isfor entries of arm 7 to the maximum extent in consequencecredit items only). lVith the conclusion of this operation of the machine, the carriage is again released and shifts to the next columnar position wherein the first column of the ledger sheet will be opposite the printing type. No hammer block roller comes into action here, so that date, folio number, and amount are all printed on the ledger sheet. After this operation of the machine, the carriage t-abulates to the next column of the ledger sheet which is used for the entry of credit items only, so that there should be a blank in this column. However, it is customary in business'establishments where machines of this character are employed to use a tally roll for collecting all amount entries in a condensed list. for bookkeeping purposes. Therefore when the carriage has shifted to this particular columnar position, the hammer block lever arm is depressed by a middle sized roller in consequence of which the date and folio number will not be printed upon the tally roll, but only the amount. Of course there will be no printing upon the ledger sheet because of the interposition of the tally roll.

More charge entries may follow, the carriage being moved back to the right, and after that credit entries may be made, the new balance having meantime first been printed in the third column on the ledger sheet, and then printed in the last or-Old balance column preliminary to the entry of credit items. However, it is unnecessary to follow through in detail the more elaborate example, such as that used in the Muller application. It will of course be understood that various arrangements of rollers may be tion according to said subdivisions.

2. The claim 1 combination, the printing mechanism comprising spring-actuated hammers,retracting means and restraining devices, togethergvith connections for tripping certain of said devices, and means controlled by the paper carriage for bringing said connectionsv into action to cause early release of hammers and thereby deprive them of percussive effect.

3. The claim 2 combination, the connections having settable catches, and the controlling means comprising a rotatable rod formed to variably act upon said catches, together with a reciprocating element to engage the set catches.

4. The claim 3 combination, the catches being upheld by springs, and the rod having circumferentially spaced projections graduated in number.

5. The claim 3 combination, the rod having a gear, and the carriage-controlled means comprising a rack in mesh therewith, and a lever-arm operatively connected with said rack and variably actuatedby the carriage fixtures.

6. The claim 1 combination, the carriage having laterally spaced rollers of varying diameters and the control-means including a lever-arm upon which said rollers ride.

7. The claim 5 combination, together with a locking pawl to hold the rack and rod at different settings.

8. The claim 7 combination together with a reciprocating machine element and a member initially actuated thereby to release the locking pawl, the latter being spring-drawn into engagement with the bar.

9. In a machine of the class described the combination of hammers, latches, ,pitmen connected to certain latches and having catches, a bail to act on said catches, a r0- tary rod with projections for setting the catches, a rack to rotate the rod, a pawl to lock the rack, a reciprocating machine element, a system of levers and links connected therewith and with the said bail and one member of which operates upon said pawl, a laterally shiftable carriage, and means controlled thereby for setting the rack bar.

MALCOLM F. GASGON.

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