US1018028A - Paymaster's calculator. - Google Patents

Description

M. A. BE-ALS & M. J. STARK, JR.

PAYMASTERS CALCULATOR.

APPLICATION FILED 0OT.16, 1911.

Patented Feb. 20. 1912.

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um f TED STATES PATENT OFFICE.

MARY A. BEALS AND MICHAEL STAB-K, 31%,:03 CHICAGO, InLINoIs; sA n STARK nssmnon ro SAID BEALS.

. PAYMASTERS CALCULATOR.

Specification of Letters Patent.-

Patented Feb. 20, 1912.

Application filed Octiiherlfi, 1911. Serial No. 654,965.

have jointly invented certain new and use-' ful Improvements in Paylnasters Calculators; and we do hereby declare that the following description of our said invention, taken in connection with the accompanying sheet of drawings, forms a full, clear, and;

exact specification, which'will enable others skilled in the art to which said invention appertains to make and use the same.

The object of this invention is the production of an efficient, serviceable, accurate,

.and convenient calculator, by -mea ns of; which the results of multiplications of various sums, etc., are instantly obtained.

To accomplish this end, the device con-.

sists, essentially, of one or more cards bearor both of their faces, preftipliers and multiplicands, the lower one of said cars having guides at two opposing margins provided with ways to facilitate the sliding of said cards upon the lowermost one of said cards, there being located upon said guidesa carriage or slide the longitudinal margins of which carry figures, said carriage being, longitudinal shaft having atits ends gear pinions constructed to' engage racks on the guidesto cause the carriage or slide to move equally at both ofits ends, all as hereinafter first fully set pointed out in the claims.

In the drawings already mentioned, which serve to illustrate this invention more fully,

l is a side elevation of the complete device. Fig. 2 is an end elevation" of the same. Fig. 3 is an end elevation of the'lower Figure of a fragment of the device, taken on the line y-y of Fig. 1. Fig. 5 is view of a fragment of the carriage or slide, illustrating the specific construction ofsaid carriage or slide.

the marginal guide thereon.

Like partsare designated by the same :thickness and suitable size.

preferably, provided with a forth and described, and then Fig. 4' is a sectional'view a perspective- Fig. 6 is a sectional view or base-board and;

' with 'to fasten these guides to the 'basei comprises a rectangular board of proper At 'two, oppositely-located margins of :tliis 'board there are 'locatedguides B, 'B ,'which are prefer- -.ably permanently secured .to the'base board .A, said :guides afiording ways or channels (1, adapted to receive-one or'more'of a series of cards C, said cards being. preferably of approximately the same size as the base- -c rd A. The guides B, B ,'are alike inconst uction so that a description of one will also apply to the other. Each of these I guides is formed from a strip of sheet metal bent-at right angles a certain distance from one of-its longitudinalmarginsto. afford a vertical wall I). It -"is then again bent at right angles to afford-a further, horizontal, wall a, andifinally again bent at right angles to afford-a dependingwa'll d, the latter'wall being approximately parallel. to .the vertical wall b, but shorter "so as to. afford a gulde-way for, and 'to' retain the cardor cards I C, upon the base-card.

-In the horizontally-disposed wall, which i is parallel to the base card,'there are equallyspaced perforations e, which form, a rack wherewith engages .a' gear rpinioir E, one

of which is secured to each end of ashaftjf, located uponsaid slide or carriage D, which slide is movably arranged-upon the guides and in close proximity to the upper card C. This slide comprises a strip of metal of proper'width,'the ends of which are notched at g,'-as best shown in I-Fig. 5,'the;notched portion being bentat right angles -to afford upstanding members 'hyarranged to engage and slide uponthe-vertical'walls b,-'of the guides'B, B and then-again bent a't-Iight angles to "form underlying members "i,-en-

gaging the lower sides of the'guides B, B, 'to prevent the slide 71) from ibeing' detached from the guides. The portions of the-slide which are producedby thenotches -'g-' therein, are .upwardlybent as "illustrated at y in Fig.

'5, and perforated at "k, 'which '-perfora'tions serve as bearings-for the-shaft 7.

The guides B, B, are .secure d tothe baseboard A in any efficient manner,-eyelets Z. as shown in 'Fig. 6, bei g preferred, whereaboard A.

In use, it ispreferred that'the device-be placed in inclined position, it being, of

course, evident that'it may .als0 'b e placed in hOIlZOIllZfiIfpOSltlOIl; and in order to support feetm, are vprovided, preferably on the lower one of said guides, .and a brace or easel F,

. hing'edly connected to the back of. the baseboard A to function inthe well-known manner. I :Upon the'faces' or sides of the cards A and there are placed, preferably .printed, nu-

merals and figures,and these are arranged in the following manner: The lowermost hori- 'zontal row offigures, p, are assumed to be multipliers. For instance, this row may 1 represent dollars and cents; units of weight, hours and fractions of hours,'or any other s lide D there are similar figur es 8, represent multiplicands which are to be multiplied by the multipliers in'the row p; and upon the face of thecardabove the row ya, there are horizontal rows of figuresregistering with the row of figures on the-margin of the slide, andlthese horizontal figures designate the' roducts of the, multiplications of the multipliers and the multiplicands. Thus assuming that the figure 10 in the row 79 of the figure 10 on the slide represents price: by

-sl1ding'the carriage D so that its margin is adjacent to the figure 10 of the multipliers, the fi re'registering with the-figure 10 on the. sl de,- will indicate the product of the multiplication, viz., 100, as shown in Fig. 1. In order to enable this device to solve instantlyhany" problem in multiplication, (or 3 inversely, in division) it is desirable that X upon the slide 1) there are various columns of multiplicands; and in order to afford ready means for supplying the slide with these data, we form on the slide lugs or clips n, underneath which may be placed strips of card-board or other suitable material upon which one of the various units are indicated, which strips are to be properly marked for identification with their correspondingcards. C bearing the products of multiplication, s already set forth.

It will now be readily understood that by preparing a set of'cards C, having different multipliersga'nd the products of multiplication with a certain series of multiplicands, vandby placing these multiplicands upon the slide, any problem in -mult-iplication can be instantly solved and the product thereof as-.

' certa'ined at aglance by properly manipulatmg the-slide Din connection with the proper card C and strip GI. The device, is, therefore-a time-saver for timekeepers in figuring the total wages .of employees, paymasters, .-store keepers, -etc'., in figuringcosts, inter-' ests, and for many other purposes which will readily suggest themselves to persons and accountants. I -In the foregoing specification we havedescribed the details of construction of the fiffi'fpa'rts withconsiderable minuteness, but we I units of calculations. At each edge of the multipliers represents pounds, and that the desire. it understood that changes in these details may be readily made without depart- 1 ing from the scope of our invention. Thus, instead of making the perforations in the guides oblong, they may be' made round, as w shown at u, in Fig. 1, orinstead of placing removable strips G uponfthe slide D, separate slides may be provided; or the clips on the slide may be dlfierently constructed, all

of which is clearly within the province of the skilled mechanic.

'Having thus fully described .our invention, we claim as new and desire to secure to us by Letters Patent of the United StZLtBS-- 0 l. A device of the nature described, com prising, in combination, a base-board, guides fixedly secured to opposite margins of said base-board said guides having a member provided with a series ofequally-spacedperforations, a slide movably mounted upon said guides, said slide having members embracing said guides, there being on said slide up-- standing punctured members affording bear-- ings, a shaft. journaled in said punctured members, said shaft being located upon said slide'and reaching from one end to the other end thereof, and pinions at the ends of said shaft constructed to engage the perforations in said guides.

' 2. A device of the nature described, comprising, in combination, a base-board, guides fixedly. secured to opposite margins'of said.

base-board, said guides having a memberprovided with a series of equally-spaced perforations, a slide movably mounted uponsaid guides, said slide having members embracing said guides, there being on said slide upstanding punctured members affording bearings, a shaft journaled in said punctured members, said shaft being located upon said slide and reaching from' one end tothe other thereof, pinions at the ends of said shaft constructed to engage the perforations in said guides, movable strips upon said slide, and means on said slide for'retaining said strips in position thereon.

3.. A device of the nature described, including, in combination, a base-board, guides fixedly secureduto the top and bottom mar- 11a gins of said base-board, said guides having. a rack, a slide movably mounted upon said guides, bearings on said slide, a shaft rotatably mounted in said bearings, said shaft being-located above said slide andreaching from one end to the other thereof, pinions at the ends of said. haft constructed to engage said raoks, means for raising the lower margin of said base board above-the sup-' porting surface of an object on which the device is constructed for use to afford space for the lower end of the slide to move horizontally on the lower guide, and means for supporting said base-board in inclined position.

4. A device of the nature described, in-

' eluding, in combination, a base-board, guides fixedly secured to the top and bottom margins of said base-board, said guides having racks, a slide movably located upon said guides, upstanding hearings on said slide, a shaft rotatably mounted in said bearings, said shaft being located above said slide and reaching from one end to the other end thereof, pinions at the ends of said shaft constructed to engage said racks, there be-' ing upon the face of said base-board vertical and horizontal rows of figures, and at the margins of said slide a series of figures registering with the figures on said base-board.

5. A device of the nature described, including, in combination, a base-board, guides fixedly secured to the top and bottom margins of said base-board, racks on said guides, a slide movably mounted on said guides, upstanding bearings on said slide, a shaft rotatably mounted in said bearings, said shaft being located above the slideand extending form one end to the other end there of, pinions at the ends. of said shaft constructed to engage said racks, one or more separate cards adapted to be superposed on said base-board, there being ways in said guides to receive said cards, and separate strips, constructed to be removably secured to the said slide, at both'sides of said shaft.

6. A device of the nature described, comprising, in combination, a base board, guides fixedly secured to said base board at the top and bottom margins thereof, said guides having a perforated upper member and inner, downwardly extending ledges which do not reach to the top surface of said base board to afford spaces between said base board and said ledges, a carriage movable on said guides said carriage having upstanding lugs near each end to afiord bearings, a shaft journaled in said lugs, said shaft reaching from one end to the other end of said carriage, and a-pinion at the outer ends of said shaft constructed to engage the perforations in the upper members of said guides.

7. A device of the nature described, comprising, in combination, a base board, guides fixedly secured to said base board at the top and bottom margins thereof, said guides having a perforated upper member, and inner downwardly extending flanges which do not reach to the top surface ofsaid base board to afford spaces between said base board and said flanges, a slide movable on said guides, said slide having upstanding lugs near each end to afford bearings, a shaft journaled in said lugs, said shaft reaching from one end to the other end of said slide, and a pinion at each outer end of said shaft constructed to engage in the perforations in the upper members of said guides, said base board having on its upper surface permanent rows of horizontal and In testimony that we claim the foregoing as -our invention, we have hereunto set our hands in the presence of two subscribing witnesses.

MARY A. BEALS. MICHAEL J. STARK, JR. Witnesses: FRIEDA T. LEBERSTEIN, Mie AEL J STARK.

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