US3604620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calculator for different numerical bases
Assignee: Individual
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Filing: 1969-04-23
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Granted: 1971-09-14
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Expires: 1989-04-23
Abstract
Abstract A calculating device for adding and subtracting quantities in at least two different base numerical systems of a type which has a plurality of sliding members for registering quantities which can be manually moved back and forth in grooves in the calculator housing. Digits inscribed on the sliding members register through sight openings in the face plate of the housing. Movement of the slide members is accomplished by inserting a pointed member through slots in the faceplate into selected notches provided in both sides of each sliding member. By moving the pointed member laterally in the groove, the sliding members likewise are moved. The carrying operation is accomplished through widened ends in each slot which limit the addition or subtraction in the next order of digits on the adjacent sliding member to one unit at a time. The numerical base system of the device is changed either by providing, in effect, different length slots, or by modifying the length of each slot-downwardly in both cases of the highest base number. Restrictive means are also provided to limit the movement of the sliding members so that only numbers of the base system involved can be displayed through the sight openings.
Inventors
- 👤 Rodney S Rakes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:18
CPC Classifications
G; G06; G06C; G06C1/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
342 words
A calculator which comprises a housing having a face on one side and providing track means in said housing under said face, sight openings in the face of said housing, slide members carried by said housing and movable along said track means past said sight openings, said slide members bearing indicia for integer quantities arranged in numerical order, said housing including slots in its face, further indicia arranged in numerical order beside each slot, uniformly spaced notch means in both side edges of each of said slide members, the notch means on a first side of said slid member adapted to permit an operator of the calculator to move said slide member through a corresponding one of said slots along said track means, said notch means spaced to correspond to each said indicia thereon whereby when a said slide member is moved so that any one of said notch means is moved from beside one of said further indicia to beside another of said indicia adjacent to said one further indicia, the indicia on said slide member seen through its corresponding sight opening is changed by one numerical unit, each of said slots having widened ends with shoulder means, one of said widened ends having its outermost shoulder aligned with one element of said indicia denoting a number base, the notch means of two adjacent slide means being exposed within said widened ends of each of said slots to permit movement of said slide means having the notch means on the second side thereof exposed by a distance corresponding to one of said numerical units, at least one other widened area with further shoulder means in each of said slots between said widened ends exposing the notch means of two adjacent slide means and adapted to permit movement of said slide means by the notch means on the second side thereof by a distance corresponding to one of said numerical units, and the outermost shoulder of said other widened area being aligned with another element of said indicia denoting another number base.
Claim 2
Dependent Claim
342 words
A calculator which comprises a housing having a face on one side and providing track means in said housing under said face, sight openings in the face of said housing, slide members carried by said housing and movable along said track means past said sight openings, said slide members bearing indicia for integer quantities arranged in numerical order, said housing including slots in its face, further indicia arranged in numerical order beside each slot, uniformly spaced notch means in both side edges of each of said slide members, the notch means on a first side of said slid member adapted to permit an operator of the calculator to move said slide member through a corresponding one of said slots along said track means, said notch means spaced to correspond to each said indicia thereon whereby when a said slide member is moved so that any one of said notch means is moved from beside one of said further indicia to beside another of said indicia adjacent to said one further indicia, the indicia on said slide member seen through its corresponding sight opening is changed by one numerical unit, each of said slots having widened ends with shoulder means, one of said widened ends having its outermost shoulder aligned with one element of said indicia denoting a number base, the notch means of two adjacent slide means being exposed within said widened ends of each of said slots to permit movement of said slide means having the notch means on the second side thereof exposed by a distance corresponding to one of said numerical units, at least one other widened area with further shoulder means in each of said slots between said widened ends exposing the notch means of two adjacent slide means and adapted to permit movement of said slide means by the notch means on the second side thereof by a distance corresponding to one of said numerical units, and the outermost shoulder of said other widened area being aligned with another element of said indicia denoting another number base.
Claim 3
Dependent Claim
26 words
A calculator in accordance with claim 1 including adjustable limit means whereby the movement of said slide means along said track means may be selectively limited.
Claim 4
Dependent Claim
27 words
A calculator in accordance with claim 2 including a reset bar for said slide means, said reset bar being included as a part of said limiting means.
Claim 5
Dependent Claim
33 words
A calculator in accordance with claim 1 wherein said one element corresponds to a base 16 numerical system and said widened area provides a calculation on a numerical system less than base 16.
Claim 6
Dependent Claim
246 words
In a calculator adapted to add, subtract, and multiply, a plurality of integer registration means for a first base numerical system, each of said registration means capable of registering a quantity for each integer of a single digit of said first base system, each said registration means adapted to represent any digit of a rational number in said first base system and being associated in an ordered sequence whereby said plurality of said registration means is capable of representing any rational number in said first base system having no more digits than the number of said registration means, a coupler guide means for adjacent registration means whereby if the quantity registered thereon is directly combined with a further quantity so that the combination thereof must be expressed in two digits, the adjacent registration means next higher in the ordered sequence is advanced to register a further digit and the adjacent registration means lower in the ordered sequence registers a quantity corresponding to said combination less the quantity of the base number of said numerical system, whereby quantities expressed in said first base system are combinable in the calculator, said coupler guide means being adjustable relative to said registration means to at least one further position for changing the calculator to a second base numerical system whereby each said registration means registers a quantity only in said second base system and quantities registered by said registration means in said second base system are combinable in the calculator.
Claim 7
Dependent Claim
246 words
In a calculator adapted to add, subtract, and multiply, a plurality of integer registration means for a first base numerical system, each of said registration means capable of registering a quantity for each integer of a single digit of said first base system, each said registration means adapted to represent any digit of a rational number in said first base system and being associated in an ordered sequence whereby said plurality of said registration means is capable of representing any rational number in said first base system having no more digits than the number of said registration means, a coupler guide means for adjacent registration means whereby if the quantity registered thereon is directly combined with a further quantity so that the combination thereof must be expressed in two digits, the adjacent registration means next higher in the ordered sequence is advanced to register a further digit and the adjacent registration means lower in the ordered sequence registers a quantity corresponding to said combination less the quantity of the base number of said numerical system, whereby quantities expressed in said first base system are combinable in the calculator, said coupler guide means being adjustable relative to said registration means to at least one further position for changing the calculator to a second base numerical system whereby each said registration means registers a quantity only in said second base system and quantities registered by said registration means in said second base system are combinable in the calculator.
Claim 8
Dependent Claim
35 words
In a calculator as defined in claim 5 including limit means associated with each of said registration means for limiting the quantity registrable thereon to a quantity one unit less than the selected base number.
Claim 9
Dependent Claim
26 words
In a calculator as defined in claim 6 wherein indicia means is associated with each of said registration means adapted to display the quantity registered thereon.
Claim 10
Dependent Claim
184 words
In a calculator adapted to add and subtract in a base 10 system, a plurality of successively higher order integer registration means, each of said registration means capable of registering a quantity for each integer from zero to nine, each of said registration means being adjacent at least one other of said registration means, a plurality of guide means, a pair of said guide means being arranged at opposite ends of each said registration means for coupling adjacent of said registration means whereby if quantities were summed in the lower order of said registration means to exceed nine said summed quantities are combined into the adjacent higher order registration means, the said higher order registration means having a further base Six guide means positioned between said pair of guide means arranged at its opposite ends whereby said higher order registration means is adapted to combine with an adjacent still higher order registration means quantities from said higher order registration means on a base six system and a numerical system based on 60 divisions is selectively combined with the base 10 system of the calculator.
Claim 11
Dependent Claim
184 words
In a calculator adapted to add and subtract in a base 10 system, a plurality of successively higher order integer registration means, each of said registration means capable of registering a quantity for each integer from zero to nine, each of said registration means being adjacent at least one other of said registration means, a plurality of guide means, a pair of said guide means being arranged at opposite ends of each said registration means for coupling adjacent of said registration means whereby if quantities were summed in the lower order of said registration means to exceed nine said summed quantities are combined into the adjacent higher order registration means, the said higher order registration means having a further base Six guide means positioned between said pair of guide means arranged at its opposite ends whereby said higher order registration means is adapted to combine with an adjacent still higher order registration means quantities from said higher order registration means on a base six system and a numerical system based on 60 divisions is selectively combined with the base 10 system of the calculator.
Claim 12
Dependent Claim
28 words
In a calculator in accordance with claim 8, limit means associated with said higher order registration means for limiting the quantity registrable thereon to a quantity of five.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |