US1644504A - Chine cobpobation - Google Patents

Description

Oct. 4, 1927. 1,644,504

J. H. BARR CALCULATING MACHINE Filed June 17, 1922 3 Sheets-Sheet 2 WITNESSES I H3 van 0oz 4 01. W

Oct. 4, 1927.

.1. H. BARR CALCULATING MACHINE Filed June, 17, 1922 3 Sheets-Sheet 3 gvwemboz %/%W 33 (It/tom M 2144,

WITNESSES a decimal carriage or cross Patented Oct. 4, 1927.

UNITED STATES 1,644,504 PATENT OFFICE.

JOHN H. BARB,

OF NEW YORK, N, Y., ASSIGNOR T0 REMINGTON ACCOUNTING MA- CHINE CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

cALcULArme macnmn.

Application filed June 17,

My invention relates to calculating machines.

The main object of the invention, generally stated, is to provide means for preventing unnecessary traveling movements of truck of the without rendering it 'in-. effective to move at proper intervals in the operation of the machine, thereby reducing the wear, strain and noise incidental to such unnecessary movements, and decreasing liability of injury to the machine.

To the above and other ends which will hereinafter appear, my invention consists in the features of construction, arrangements of parts and combinationscf devices-set forth in the following description and particularly pointed out in the appended claims. Y

In the accompanying drawings, wherein like reference characters indicate correspondin" partsin the different views,

igure 1 is a fragmentary side elevation with parts in section andparts omitted of a Remington accounting cross footing machine embodying my invention.

Figure 2 is a front elevation of the same .with parts sectioned away and parts omitted.

Figure 3 is an enlarged detail perspective View of the pick-up mechanism between the main carriage and cross truck and some of the associated parts, the view illustrating the detent mechanism of my'invention in action.

Figure 4: is an enlarged detail plan view with parts in section, showing a portion of the detent mechanism of my invention with some of the associated parts.

I have shownmy invention, in the present instance, embodied in a Remington accounting machine of the character disclosed in the patent to John C. Wahl No. 1,270,471, dated June 25, 1918, but have shown only so much of said machine as is necessary to arrive at anunderstanding of my invention in its embodiment therein. It should be understood,

jumping totalizer however, that the invention is not restricted to its inclusion in such a machine, but may be employed wherever found available in difierent makes of calculating machines.

The Remington accounting machine referred to above includes a Remington typewriting machine, the paper carria e .of which has connected thereto a main ca culator carriage or truck on which a series of so-called vertical totalizers 'ismounted. A

1922. Serial in. $68,915.

cross-foot or jumping totalizer is carried by an auxiliary carriage or cross truck. Automatically operating means are employed for intermittently picking up and releasing the auxiliary carriage, thus alternately moving the latter forward and allowing it to return ,to normal position during the travel of the typewriter and main carriage ortruck across the machine in one direction. These forward and back movements of the cross carriage are sometimes unnecessary, as for example when the operator desiresto skip computing columns without writing therein.

Let it be assumed for instance that the op- 'erator desired to bring the third vertical dering the release of the cross carriage, bv

the automatically operated pick-up mechanism, ineffective to bring about a jumping back or return of the cross carriage to normal' position. I accomplish this in the present instance by automatically throwing a;

detent into engagement with the cross carriage. Thisdetent is preferably controlled by a key which also is efiectiveto release the main carriage from control of its escapement mechanism so that the movement of the detent is incidental to therelease of the car riage by said key and is therefore automatically effected. As shown herein the key in question is a tabulator key, so that successive actuations, say three, of this key is effective to bring the third vertical totalizerto the computing zone. "During these successive jumps of the main carriage the cross carriage will be revented from making a complete forwar and backward travel for each jump of the main carriage, or for the passage of each vertical totalizer through the computing zone, as is ordinarily the case, all as will hereinafter ,more clearly appear.

The Remington typewriting machineto which the calculating mechanism is shown applied as an attachment, includes the usual letter keys 1 on key levers 2, and the usual numeral keys 3 on key levers 4. Each of the key levers 2 and 4 is connected by a link 5 to a sub-lever 6-which in turn is connected by a link 7 to the heel of a type bar 8 Each of the numeral key levers 3, in addition to be ng connected with its type bar, is connected to a link 9 which eoacts with devices (notishown) of the actuator of the calculating mechanism. as fulh shown and described in the hereinbefore mentioned Wahl patent.

Each of the key levers 2 and 4 carries a contact screw 10 which depresses the universal bar 11 connected through an 1nterme diate train of connections with a dog rocker 12 that controls an escapement wheel 13 of the carriage escapement. The train of connections between the universal bar and dog rocker includes a rock shaft 14 carrying arms 15 on which the universal bar is supported, a centrally disposed crank arm 16 on the shaft, and a link 17 connected at one end to the arm 16 and at its other end to the dog rocker. The escapement wheel 13 is connected to a feedgpinion 18 that meshes with a feed rack 19. The feed rack is carried by arms 20 pivoted at 21 to the typewriter carriage 22. The carriage, which is spring 1mpelled by a spring drum (not shown) is thus controlled in its step-by-step feed movement across the machine from right to left by the escapementmechanism, which in turn is controlled by the keys 1 and 3.

As disclosed in said Wahl patent,'the machine is equipped with a decimal tabulator comprising tabulator keys 23. each connected to a spring returned push rod 24 supported near its forward end in a guide opening in a frame member secured to the frame 25 of the machine. The rear end of each push rod is connected to the lower end of a stop lever 26, pivoted at 27 to a tabulator frame 28 and terminating at its upper end in. a forwardly extending denominational stop 29. Column stops 30 are carried by a column stop bar 31 at letter space intervals,

and are adapted to be moved thereon foreand-aft of the machine into and out of operative or effective position. The key controlled setting means by which the column stops are shifted to or set ineffective position, and thecam by which they are shifted forward to ineffective position, are not shown, being well known in the art. The column stop bar 31 is secured to arms 32 fixed to and projecting rearwardly from the carriage 22. i

In order to effect a release of the carriage 22 from control of its escapement mechanism when any of the tabulator keys is actuated, each push rod 24- carries a contact 33 which coacts with a universal release bar 34. This bar is secured to a yoke-like member 35 having upwardly extending arms 36 secured to sleeves or hubs 37 and 38 (Fig. 2) whichare fixed by set screws 38 to a rock shaft 39. Depending arms 40 on the yoke 35 are pivoted at 411 to rearwardly directed links 42. The rear end of each link 42 is pivoted at 43.10 a crank arm 44 on a rock shaft 45. An additional downwardly and forwardly extending crank arm 46 on the rock shaft is pivoted at 17 to an. upwardly extending link 48. The upper end of this link is pivoted at 49 to a rack releasing device 50 pivoted at 51 to a bracket 52 secured to the top plate of the machine. Th s releasing device includes a pinion 53 which, when the device is turned on its pivot 51, engages the feed rack 19 and, lifting the latter, disengages it from the feed pinion 18, thus freeing the carriage from control of its escapement mechanism. It will be understood, therefore, that actuation of any tabulator key is effective not only to project the companion denominational stop 29 into the path of the operative column stops, but .is also effective to simultaneously release the carriage, so that it is free to travel until the first of the column stops reaches the projected stop 29 and thus bring about an arrest of the carriage. A spring. not shown, is connected to therock shaft 45 to return it and the parts connected therewith (including the shaft 39) to normal positionswhen the operator releases the actuated tabulator key. 7

The mechanism as thus far described is of the ordinary construction.

so far as concerns parts thereof which are necessary to an understanding of the present invention. Therefore the illustration has been materially simplified by omitting many parts of the machine disclosed in said \Vahl patent. v

i The main truck for the calculating mechanism comprises a bar 54 mounted and connected to the typewriter carriage in the usual manner to travel therewith. Thus, said bar carries bracket arms 55 connected by screws 56 to arms 57. which are fixed to and project forwardly from the carriage 22. So-called vertical totalizers 58, 59, 60 and 61 are detachably and adjustably mounted on the truck bar 54. Any desired number of these totalizers may be employed, shown in the present instance. Each total: izer carries registering mechanism including a series of gear wheels 62 and aseries of number wheels 62. As a totalizer passes step-by-step through the computing zone the wheels 62 thereof are brought successively into mesh with a master wheel 63 controlled four being from the numeral keys 3. The extent the master wheel 63 and meshing gear wheel 62 rotate at each actuation of a key 3 depends on the particular numeral key depressed.

In addition to the vertical totalizers referred to,- the machine is provided wit-ha cross foot or jumping totalizer 64 which ac cumulates the sum registered on the series of vertical totalizers. This totalizer 64 is like the vertical totalizers and includes gear wheels 65. and a series of number wheels 65. The wheels 65 are brought successively into mesh with a master wheel 66, turned by the actuator at each depression of a numeral key 3, the same extent that the master wheel 63 is turned. The cross-foot totalizer is carried by a cross-foot truck comprising a bar 67 somewhat similar in cross section to the bar 54 and on which the cross-foot totalizer is detachably mounted. This bar is supported to move longitudinally on hearing balls 68 movable in grooves in a fixed supporting bar 69 secured to the frame. The trucks or carriages 54 and 67 are sometimes called decimal carriages because they determine by their positions at the time the decimal order in which the calculation, due toan'operation of a numeral key 3, will occur.

Automatically operating connecting means between each vertical totalizer and the cro s truck or carriage are provided for intermittently picking up the cross carriage and releasing it for alternate forward and back movements during a single travel of the main truck or carriage in one direction.

Thus .the right-hand side plate of each of the vertical totalizers is formed with an engaging projection 70 which is adapted to coact with an upwardly extending hooklike projectionor tooth 71 on a so-called pick-up beam 72. A laterally projecting headed screw stud 73, fixed to the beam 72, is received in a short horizontally disposed bearing-slot 74 in a bracket arm 75 secured to the bar 67. This construction enables the beam 72 to receiive a pivotal'movement on the bracket and also affords a limited relative sliding movement between the 'two against the action of a cotractile bufi'er spring 76, connected at one end to a pin 77 carried by the beam 72 and at its other end to the bracket arm 75. It will-be observed: that the force of the spring is'directed in'a line above the stud 73,-'-'and therefore tends to turn the 'beainaround the center of said stud and elevate the inner hook-carrying endof the beam, and also tends to maintain the stud seated at the right-hand end of the slot 74. This last mentioned function of the spring isto provide a cushion between each connectedvertical totalizer and the cross truck as the lat ter is picked up by the former, especially in A forwardly projecting pin 78 extends from the pick-up beam 72 and projects through an enlarged opening 79 in a pickup guard 80 to be hereinafter more fully described. This pin 78 is provided with a guide flange 81 which coacts with the guard 80 at the front side thereof. The pin 78, after passing through the opening 79 in the pick-up guard, extends into, a slot 82 in afixed late 83. Apart of the lower wall of the s.ot'82 is formed by the upper edge of an auxiliary plate 84 adapted to be adjusted along the plate 83 and secured in place thereon by screws 85. The upper edge of the plate 84: has a depression 86 therein which, when the parts are in the normal position represented in Fig. 2, is beneath the pin 78. This permits the pin 781to move down into the depression as the engaging PIOJQCtlOIlS on the vertical totalizers move successively over the beveled face of' the tooth 71 and depress the pick-up beam in the backward travel of'the carriage 22. The slot 82 throughout all other parts thereof is of a width which. corresponds substantially to the diameter of. the pin 78, and the walls of the slot therefore restrain the pin against free up and down movement. The left-hand portion of the slot 82 is formed with a cam 87 with which the pin 78 coacts as the pick-up beam is carried along with the main carriage by a projection 70 on vertical totalizer. The effect of engaging the cam 87 isto move the pin 78 and the hook carrying end of the beam down, thus disengaging the hook 71 from the totalizer and enabling the cross truck 67 and the beam to be returned to the right independently of the main truck or carriage. A spring 88 is effective to bring about this independent return movement of the cross foot truck and the parts connected therewith. Said spring is connected at one end to a pin 89 on the stationary bar 69, and at the other end to a pin 90 onthe truck bar 67 the'intermediate looped portion of the spring passing around a pulley 91 on the supporting bar 69.

In addition to the spring 76 for elevatin the beam 72, there is provided the usua lever 92 pivoted at93 on a'fix ed pivot, and

connected at one end to a spring-94. The,

with the nose 95 of the lever at all times except when the beam is in the normal position with'its pin 78 over the depression 86. It will be understood, therefore, that the force of the spring 94 is efiective only when the pick-up beam 72 is in the normal position. It follows that when the pin 78 engages the cam 87, as shown in Fig. 3, to release the pin from the engaged. ertical totalizer, it does not have the resistance of the spring 94 to overcome.

The pick-up guard- 80 herein before referred to is provided to automatically coact at its free end 80* with the right-hand face of the projection 70 on a vertical totalizer when the hook or tooth 71 engages the opposite side of said projection, and thus form an interlock -tha't*prevents a relative movement between the main truck and cross-truck in either direction of the travel.

A- complete detail description of the construction and operation of the pick-up guard is deemed unnecessary, except to point out that it is automatically actuated and operates in conjunction with the pick-up beam to insure the proper positioning of the cross truck in a decimal position corresponding to that of a vertical total izer when the latter is .in the computing zone. This may be better understood when it is pointed out that the pick-up guard 80 is pivoted on the stud 73 and is moved to its elevated engaging position by a spring 96. When the cross truck returns, and the pick-up beam moves back to normal position, acam 97 (see Fig.

' 3) on the guard 80 engages a pin 98 which is in the path of the cam and is carried by thefixed plate 84. This engagement of thecam with the pin causes the guard. member 80 to be lowered at its free end out of the path of the projections 70. When, however, the pick-up beam is engaged by the projection 7 O and moves to the left, the cam member 97 is moved away from the fixed pin 98. This enables the guard to be elevated by its spring 96, and the end 80 to be positioned to the right ofthe projection engaged by the hook 71., When, however, the hook 71 is cammed down out of engagement with the projection 70, as hereinbefore described, the pin 78 carries the guard 80 down with it. v

The construction thus far described is the same as that disclosed in the Wahl patent referred to above.

It will be understood that ordinarily in the'operation oil the machine, as a vertical totalizer, say 58, approaches the computing zone to bring a wheel 62 thereof into mesh with the master wheel 63, the pick-up beam 72 will be engaged by the projection 70 on said totnlizer 58., causing the cross-truck and totalizer 64 to travel in unison with the main truck or carriage. As said totalizer 58 misses out of the computing zone and be- -When no actuation of the vertical totalizer is eficcted. This, therefore, results in unnecessary forward and back movements of the cross-truck and totalizer, with consequent-unnecessary wear and liability of injury thereto, and the production of a clatter ing noise, especially under the rapid movements of the main carriage under control ofthe tabulator. Let it be assumed, for example, that the main carriage is in the extreme right-hand position, and the operator desires to operate only the fourth totalizer 61. This might be brought about by actuating the proper tabulating key 23 four times, thereby bringing the fourth totalizer 61 by successive jumps of the main carriage, into proper position to be actuated. The consequence of jumping the main carriage in the manner described is to alternately pick up and release the cross truck for free return movement as each vertical totalizer passes through the computing zone, there being six unnecessary forward and back movements of the cross truck in the example specified. It will be understood, moreover, that the pick-up of the cross truck in the manner indicated is efi'ected while the main carriage is running free during a tabulating operation, and often when the carriage has run a considerable distance before the pick-up of the cross-truck is efiected, and at times when the cross truck is running free in the opposite direction; The shock thus exerted on the comparatively frail parts is apt to injure or strain the construction,-such for example as breaking off the projection 70. Of course, when more vertical totalizer s are employed, there is apt to be a greater number of unnecessary forward and back movements of the cross truck, and a consequent increased clattering noise and liability of injury.

In accordance with my present invention I overcome these ditliculties, and provide means that are automatically actuated at each operation of a tabulator key to hold the cross-truck against return movement to its normal position.-. The cross-truck is thus held solong as pressure is maintained on the actuated key, and until the jumping opera tion of the main carriage effected by such key has brought the next totalizer to a position Where it may pick up the beam without shock, and prevent the return movement of the cross-truck to normal position. This mechanism will now be described.

It has been pointed out that the universal release 'bar 34 of the tabulator mechanism is fixed to a rock shaft 39. Each actuation of a tabulator key is efiective therefore to rock this shaft. Fixed on the hub 38 is a crank arm 99 connected at its forward end to a two-part link 100. The upper end of this link is pivotally connected at 101 to a rearwardly extending crank arm 102 on a sheet metal yoke or rocking member 103. The parallel side arms of this yoke are provided with holes 104 therein (Fig. 3) receive a bearing sleeve 105 fixed to the yoke. The bearing sleeve is mounted to turn on one of the usual cross rods 106 of the frame which supports the mechanism of the crossfooter; the ends of the sleeve bearing against the plates 107 and 108 of said supporting frame. If desired, lubricating openings 109 may be formed in the sleeve, through which oil may be introduced to the bearing for the sleeve. The yoke thus supported for pivotal. movements carries on its cross bar 110 a pawl, detent or holding device 111 pivoted on a shouldered pivot screw 112 secured to the cross bar. This pawl has a leaf spring 113 secured thereto at 11 1, the free end portion of the" spring extending over the upper edge of the frame plate 108. pawl is in the same vertical transverse plane as a rack 115 secured to the cross truck 67, and is directly beneath said rack whenthe parts are in the position represented in Fig. 3. In the normal position of the parts shown in Fig. 2, the pawl is free from spring pressure and is maintained in position on its pivot by the weighted righthand end por-' tion of the pawl holding the spring 113 down on the upper edge of the plate 108.' In this position the engaging nose 111 of the pawl is maintained out of the path of the teeth of the rack '115, and the cross-truck is therefore free to travel forward and back without interference from the pawl so long as the latter remains in its lowered position- However, when a tabulator key 23, is actuated the shaft 39 is rocked as previously described, which results in moving the arm 99' down, rocking the yoke 103 and elevating the pawl 111. As the pawl moves up with the cross bar of the'yoke, the engaging nose of the pawl will be brought into the path of the teeth on the rack 115. The operation of the tabulator key having released the main carriage, the latter moves to the left, and when the projection 70 on the approaching vertical totalizer reaches the hook 71, the

' pick-up beam and cross-foot truck will be picked up and carried to the left with the main carriage until the latter is arrested by the projected tabulator stop 29. At this time the cross-truck will have moved to the left far enough to bring the teeth of the rack 115 into engagement with the pawl or .detent 111, which is maintained in effective or ele- The vated position until after the main carriage has completed its travel and the tabulator key is released. From an inspection of Fig.

3 it will be seen that as the rack 115 passes over the pawl 111 the spring 113 bears against the lower endsof the rack teeth and exerts a force against the pawl which tends to hold the nose lll 'thereof in engagement with the teeth of the rack; the pawl yielding to a forward movement of the rack and cross-truck but preventing a return movementthereof. The described actuation of the tabulator key brought about a movement of the main carriage to bring, say, the

first-vertical totalizer 58 to the computing 87 to automatically release the pick-up beam from the totalizer 58. Let it be assumed, however, that the operator desires to register in the fourth vertical totalizer and not effect a registration in any of the preceding vertical totalizers. This may be done by operating a tabulator key successively until the fourth totalizer 01 has been brought to the computing zone with the proper wheel 62 of said totalizer in mesh with the ;master wheel 63. The parts, as they appearpin Fig. 3, maybe assumed to represent their disposition after the second actuation of a tabulating key, and while the operator still maintains pressure on the key. It will be understood from this figure that the main carriage having been released carries the pick-up beam and cross foot carriage forward until the beam is automatically released from the totalizer 58, thus freeing thecross foot car riage for return movement, as indicated in Fig. 3. However, atthis time the pawl or detent 111 engages the rack of said carriage, as shown, and prevents such return movement. This engagement of the pawl 15 maintained until the main carriage has completed its movement and has been arrested by the projecting tabulator stop 29. The tabulator key is now released and the return movement of the rock shaft 39, under the action of its spring, lowers the detent 111 and frees it from the cross-foot carriage, but nevertheless the latter will not return to normal key. When the fourth totalizer 61 is brought to the computing zone, the pick-up beam engages the projection. 70 on said totalizer and the cross-foot carriage receives a stepby-step travel with the main carriage durin the successive operations of the numera keys; entering like amounts in the vertical totalizer 61 and cross-foot totalizer 64. As a totalizer 61 passes out of the computing zone the pin 78 engages the cam 87 and releases the pick-up beam, The crossioot carriage at this time being free from restraint of the detent 111, returns to normal position for the first time during the travel olothe main carriage and the successive pass ing of the totalizers 58, 59 and 60 through the computing zone,

It will be seen from what has been said that l have provided simple and eii'ective means for preventing unnecessary movements of the cross-truck or carriage forward and back to normal position during a single travel of the main carriage in one direction, without, however, interfering with such return movement of the cross-truck at the proper intervals, as When a vertical totalizer passes through a computing zone by a stepby-step movement under control oi the nip moral keys reason of this fact there is a reduction of wear and strain the part eliminating the noise incidental to such unnecessary jumping movements of the cross truck, and reducing the liability of injuring the mechanism, Moreover, it will be und rstood that the mechanism of my invention may be readilv included Remington accounting machines of the character disclosed in said patent to l/l ahl Without modifying the structured features of said mechanism they ROW exist, and Without rference with the operation of comouted mechanism of such machines to pen n theirusuai operations, other thorn has specifically pointed out herein, ca tier consideration of the n that the construction as is tee hereinbefore mentioned t is such that the cross-foot cars be automatically picked up as each veiti al totalizer passes into n puting will be automatically 1 ned as the S13E19 totalizer under varying conditions of use, further than I '111 will be actuated at each operation of a tabulator key, but 'will merely return to normal position when the tabulator'key is released Without afi'ecting the cross-foot carriage,

Variouschanges may be made Without departing from my invention, which from one aspect thereof contemplates broadly the pro vision of means operated incidental to the actuation of means for releasing the main carriage, for maintaining the independently returned cros -"foot carriage against such independent return movement W hat I claim as new and. desire to secure by Letters Patent, is

l, in a calculation" machine, the combination of main auxiliary carriage, automaticaiiy operating means for moving auxiliavv carriage back and. forth do T sin no travel of the main carriage in one direction, and means for holding aux y carriage quiescent during the travel or the carriage, said means con using a rack on said auxiliary carriage, normally disengaged detent cooperative with reel: and means for moving said detent engagement with said reels,

2., calculating mac aill'lfi, the combination of a mai carriage, auxiliary carriage, autoir ,tically operating means for moving the carriage back and forth during travel of the main carmage in one d ction, and, means for boldmg the I carriage quiescent during the travel; or he main carriage, said means comprising rack on auxiliary can mag-e, norma disengaged detent coop eratlve Will key efiective to re r traveling moveby said key for engagement with ment, and coir throwing detent resin tion of a carriage, escapement mechanism.

therefor, a key for releasing the carriage from control of its escapementmechanism, a series of vertical totalizers carried by the carriage, a cross-truck, a cross totalizer carried thereby, automatically operating pickup mechanism for picking up said cross truck to connect it with the carriage as each vertical" totalizer approaches a computing zone and for automatically freeing the cross truck from the carriage for independent return movement to normal position as each vertical totalizer passes through the computing zone, a contact fixedly mounted directly on the cross truck. and means controlled by said key to co -act with said contact and' thereby prevent a complete return movement of the cross truck.- r

5. In a calculating machine the combination of a carriage, a cross totalizer, automatically actuated pick-up mechanism for a1ternately and repeatedly picking up and releas-.

ing said cross totalizer during the single travel of the carriagein one direction, a tabulator stop maintained always when in use in fixed relation to move co-extensively with the carriage. a key controlled tabulator stop, and means controlled by an'actuation" of the key of said last mentioned tabulator stop to hold the cross totalizer against return movement to normal position.

Signed at the borough of Manhattan. city of New York. in the county of New York and State of New York this 16th day of June, A. D. 1922.

' JOHN H. BARR.

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