US1198851A

US1198851A - Adding-machine.

Info

Publication number: US1198851A
Application number: US84608814A
Authority: US
Inventors: James F Key
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-06-19
Filing date: 1914-06-19
Publication date: 1916-09-19
Anticipated expiration: 1933-09-19

Description

1. F. KEY.

ADDING MACHINE APPLlcAloN r11D1uNEl9,1914.

Patented Sept. 19, 1916.

5 SHEETS-SHEET l- INVENTOR a/H 5 ,f7/ffl;

A TTORNE YS J. F. KEY.

ADDING MACHINE. APPLICATION Flyin 111x519, |914.

Patented Sept. 19, 1916.

5 SHEETS-SHEET 2.

ISINIFII W/TNESSES 6.96%

J. F. KEY. ADDING MACHINE.

APPLICATION FILED JUNE I9, |914.

Patented sept. 19,l 1916.

5 SHEETS-SHEET 3.

,4 TTOH/VEYS 5 SHEETS-SHEET 4.

l. F. KEY.

ADDING MACHINE.

APPLICATION FILED IuNE I9, |9I4.

Patented Sept. 19, 1916.

5 SHEETS-SHEET 5 'L WIT/VESSES A TTOR/VEYR JAMES F. KEY, OF LONG BEACH, CALIFORNIA.

ADDING-MACHINE.

Specification of Letters Patent. r Patented Sept, 19, 1.916,

Application led .Tune 19, 1914. Serial No. 846,088.

To all whom t may concern.'

Be it known that I, J AMES F. KEY, a citizen of the United States, and a resident of Long Beach, in the county of Los Angeles and State of California, have made certain new and useful Improvements in Adding- Machines, of which the following is a specification. Y

My invention relates to improvements in adding machines, and it consists in the combinations, constructions and arrangements herein described and claimed.

An object of .my invention is to provide a device which is simple in operation, and which can be manufactured at small cost for vpermitting operations that are ordinarily accomplished by machines of much greater complexity and which are comparatively expensive.

A further object of my invention is to provide a device of the type described comprising a rotatable number disk which actuates an indicating wheel with means for holding the number disk and the wheel in leasing the wheel to permit its return to its their various positions and for instantly reinitial position.

Other objects and advantages will appear in the following specification and the novel featuresaof the device will be particularly pointed out in the appended claims.

My invention is illustrated in the accompanying drawings forming part of this application in which- Figure 1 is a plan lview of the device, Fig. 2 is a view of the under side of the operative mechanism, Fig. 3 is a section along the line 3 3 of Fig. 2, Fig. 4 is a section along the line 4 4 of Fig. 3, Fig. 5`is a face view o1' the number disk, Fig'. '6 is an enlarged plan view of a portion of the device showing the apparatus in one position, Fig. 7 is a view` similar to Fig. 6 showing the apparatus in another position, Fig. 8 is a section along the line 8-f8 of Fig. 1 lookingin the direction of the arrows, Fig. 9 isa section` along the line 99 of Fig. 8, Fig. 10 is an enlarged section along the line 10-10 of Fig. 3, Fig. 11 is a plan view of a modified form of the device, and Fig. 12 is asection along the line 12-12 of Fig. 11.

In carrying out my invention I provide a casing preferably of metal and of substantially triangular cross section, as shown in 55 Fig. 8. In this figure it lwill be seen that there is an inclined front plate 1 having an integral back portion 2, these parts being secured to a bottom member 3. The latter is provided with a peripheral iange 3X which forms a stiffening member-and also convenient means for attachment. The ends of the casing consist of castings such as that shown at 5 in Fig. 9, these castings being provided with recesses 5x for the nuts 6 of longitudinal brace bars 7 Referring now particularly to Fig. lit will be seen that the plate 1 may be provided with one or more clrcular openings 8 bordered by a series of radially extending lines 9, which divides the edge of the wheels adjacent to the opening into 100 parts, these parts being designated by numerals 10, which range from zero to 99 inclusive. Although in Fig. 1 I have shown two openings, it will be understood that this is merely for the sake of convenience in having two separate adding machines on one plate, each of these machines being otherwise entirely separate and distinct from each other. A esription of one therefore will suffice for ot Referring now particularly to Fig. 5, it

' will be seen that I have provided a disk 11 of substantially circular shape, the edge of the disk, however, being formed in the manner of a spiral such as an involute and being provided with a downwardly turned flange 11a shown in dotted lines in Fig. 1 and in full lines in Figs. 3 and 8. The disk 11 is provided with an innercircular row. of openings 11b and with a concentric row of similar openings 11F which are staggered with respect to the openings 11b in order to permit a greater number of openings of a given size than if these openings were disposed at the same distance from the center of the disk. Each of these openings has an indicating line 1ld which extends radially. The` openings are numbered from zero to 99 by a concentric row of numerals 11. An outer concentric row of openings 11t is provided for a purpose hereinafter described. As will be seen from Fig. 3, these openings llf'are in a portion of the disk which is raised-r from that portion'bearing the numerals. p A

'In Figs`."2 and@ I have shown a plate 12 which is spaced apart from the face plate by means of blocks or posts 13, the latter being held in position by means of screws 14 or in any other suitable manner. Carried by the plate 12 is a cylindrical housing 15, whose upper portion is flanged at 15X so that the housing may be riveted to the plate. This .housing forms part of a bearing for a central .pivot post 1G, which is 'provided with a sleeve 17, the latter forming a retainer for anti-friction balls` 1S. The top part of the post is provided with a head 1G which is flanged so as to receive and retain the disk 11 and a washer or strengthening disk 19. After these parts are placed in position they are riveted as shown in the drawlngs. The lower portion of the pivot post 16 is recessed to receive a spring 20, while a ball 2l is disposed at the bottom of the recess, the spring 20 resting upon the ball. A central passage way 22 extends from the top of the pivot post to the recess in which the spring 20 is disposed. At the bottom of the pivot post 16 are lateral projections 1Gb which serve to support the ball retainer 17.

As will be seen from Figs. 2, 3 and 8 the U-shaped bracket 23 is, secured to the plate 12. This is provided with a transverse pivot bar 24 upon which is pivoted a U-shaped frame member 25 extending normally at right angles to the U-shaped bracket 23, as shown in Fig. 3. Pivoted between the arms of the U-shaped frame member 25 is the shaft 26 of a wheel 27 having teeth 27a. The shaft 26 bears a spiral spring 28, one end of which is connected with the wheel 27, the other end being connected with a portion of the frame 25. The frame 25 bearing the wheel -27 is held in an upper position by means of a spring 29 secured to the plate 12 (see Fig. 3). A push rod 31 is pivotally connected at 32 tothe frame 25 andeX- tends outwardly through an opening in the face plate 1, being bent laterally to provided a thumb portion, as shown in the drawings.

As will be plainly seen from Fig. 3 the teeth 27a of the wheel '27 are designed to be engaged -by ,the downwardly depending iianges 11'L1 of the disk 11, and it is obvious that as, the disk 11 is turned the wheel 27 will be rotated. f.,

The plate V1 is provided with an opening 33 through which numbers 34 on the outer' faces of the teeth may be observed. This opening 33 is connected with a slot 35 through which the numbers 11e ofthe disk 11 may be observed-as they come into registration with the slot. A yprojection 11k extends inwardly over the disk l1, as shown in Fig. 1, this projection extending ast Athe concentric rows of openings 11b an 11c of the disk.

At 36 in Fig. l I have shown an indicating handarranged to play over a dial 37. This hand may be connected with the number wheel 27 in order to indicate the number of revolutions of the wheel.

and the latter is rotated in a direction op posite to that of the arrow shown in Fig. 1, the apparatus will have assumed the position shown in Fig. 6 in which the number Zero on the wheel 27 appears in the opening immediately adjacent to the edge of the disk 11, while the number double zero appears in the slot 35. In adding a column of figures, as for

instance

7, 23, 89, 4G, 92, 61 and 33, the point of the pencil or implement is inserted in the opening opposite nthe numeral 7, a slight pressure is applied downwardly while the disk is rotated in a clockwise direction shown by the arrow until the implement comes into engagement with the stop member 11k. The numeral 7 will now appear in the slot 35. In pressing down on the disk 11 the latter is moved slightly downwardly against the tension of the spring 20 (see Fig. 3) to free it from frictional engagement with the under side of the plate. When the pencil is removed the plate springs back into position so as to hold the disk stationary by frictional engagement. turned precisely to the proper position I provide a rigid centering member 41 (see Fig. 4) which is tapered 'to enter the openings 11t so as to bring the disk in the proper position. Furthermore this member tends to aid in retaining the disk in position. When the disk 11 is moved downwardly as described, it is free from the centering mem-V ber 41. The pencil is now put in the opening corresponding to the numeral 23 and the operation is repeated and so on with therema'ining numbers. The rotation of the disk will cause the rotation of the number Wheel 27 through the engagement of the flange 11 with the teeth of the number wheel. Since the number wheel is only rotated one tooth for every revolution of the disk it will be apparent that the figures on the number wheel represent hundreds so that in the example just given when the machine has been operated the fi ure 3 will appear in the opening 33, while te numeral 51 will appear in the slot 35, thus showing ata glance that the sum of the numerals is-351.

Of course, a wheel 27 of sufficient size might be employed'to have any given number of teeth, but in practice I prefer to em- In order that the disk may beA ploy a wheel having forty teeth. One of these is larger than the others. .This tooth is shown at 42 in Fig. 3. It v-is obvious that when this tooth is reached there can be no further rotation in a clockwise direction of the wheel 27. The purpose of the indicating dial 37. is to register the number of revolutions of the wheel 27 so that when the wheel rapidly and since the action of the revolving disk upon the number wheel is positive the machine is absolutely accurate.

As will be seen from Figs. 6 and 7 the edge of the disk 11 takes the place of a pointer and the' eye can instantly see the proper number on the wheel because it is immediately adjacent to the edge of the disk. This does away with the necessity of a pointer and permits. the operation of the device in a much more rapid manner than with other devices in which the mechanism is more complicated.

In Figs. 11 and 12 I have shown a modified form of the device in which the plate 1 is provided with a bearing 15 similar to the bearing 15 in which a disky 11 similar to the disk 11 is mounted. A plate 12 has a bracket 43 which carries a bearing 44 for the shaft 45 of a wheel 46. The opposite end of the'shaft is journaled in a bearing 47 in the plate 1. The wheel 46 is provided with teeth 46a which extend laterally from the plane of the wheel and which are designed to be engaged by the downwardly extending flange 11X of the disk 11. The plate l12 lbears a stop member 48 arranged to engage a stop member 49 on the wheel 46. The wheel 46 bears a wide tooth 50 against which the end of the shoulder 11y of the disk 11 engages when the wheel 46 is being rotated one turn.

The operation of this form of the device is similar to that already described. In both cases the number of the tooth on the number wheel nearest the edge of the rotatable disk indicates hundreds, while the tens and units are indicated by the figures on the face of the disk itself. In Fig. 11 it reads 299, the 2 appearing on the

number wheel

46 and 99 appearing in the slot 35.

I claim:

1. In an adding machine, a rotatable disk having a laterally extending spiral flange, a rotatable number wheel having a series of teeth arranged to be engaged successively by the flange, the rotation of the disk one turn serving to rotate the number wheel a distance corresponding to one tooth, said number wheel being provided vwith an enlarged tooth,A whereby rotation of the disk is stopped when the flange engages said tooth.

2. In'an adding machine, a rotatable disk, a rotatable number wheel disposed adjacent to said disk and having a portion adapted to be covered by the disk, a laterally extending flange carried by the disk, a series of numbered teeth carried by the number wheel and arranged to be engaged successively by the flange on the rotation o-f the disk, one turn of the disk serving to rotate the number wheel the distance of one tooth and to thereby cover or uncover' one of the numbers carried by the number wheel, and means for holding the disk frictionally in any of its positions, said last-named means comprising a spring on the side of the disk facing the number wheel, and an abutment member on the opposite side of the disk.

3. The combination with a rotatable disk having a laterally extending flange formed in the manner of a worm, a number wheel having its axis at right angles to the axis of the disk, said number wheel being pro vided with teeth having numbers on their outer faces, said teeth being arranged to be engaged by the laterally extending flange and to be moved the space of one tooth for each revolution of the disk, said disk being movable bodily along its axis of rotation, a spring for normally forcing the body portion of the disk away from the wheel, and means on the opposite side of the disk for frictionally engaging the body portion of the disk.

' 4. The combination with a rotatable disk having a laterally extending flange formed in the manner of a worm, a number wheel having its axis at right angles to the axis of the disk, said number wheel being provided with teeth having numbers on their outer faces, said teeth being arranged to be engaged by the laterally extending flange and to be moved the space of one tooth for each revolution of the disk, said disk being movable bodily along its 'axis of rotation, a spring for normally forcing the body portion of the disk away from the wheel, and a casing member on the opposite side of the disk from the wheel adapted to engage and frictionally hold the disk in any of its positions.

5. The combination with a rotatable disk having a laterally extending flange formed in the manner of a worm, a number wheel having its axis at right angles to the axis of the disk, said number wheel being pro- -vided with teeth having numbers on their spring for normally forcing the body por# posing to View the vtooth of the Wheel which tion ofthe disk away from the Wheel, a is in engagement with the flange of the disk.

casing member on the opposite side of the JAMES F. KEY. disk from the Wheel adapted to engage and Witnesses: frictionally hold the disk in any of its posi- VILFRED M. PECK,

tions, said casing having an opening for eX- FRANCIS J. MIEDING.