US1398871A - Dividers - Google Patents

Dividers Download PDF

Info

Publication number
US1398871A
US1398871A US384641A US38464120A US1398871A US 1398871 A US1398871 A US 1398871A US 384641 A US384641 A US 384641A US 38464120 A US38464120 A US 38464120A US 1398871 A US1398871 A US 1398871A
Authority
US
United States
Prior art keywords
block
bars
center
gear
dividers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US384641A
Inventor
Robert L Livingston
Original Assignee
Robert L Livingston
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert L Livingston filed Critical Robert L Livingston
Priority to US384641A priority Critical patent/US1398871A/en
Application granted granted Critical
Publication of US1398871A publication Critical patent/US1398871A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00Circular curve-drawing or like instruments
    • B43L9/12Dividers

Description

R. L. LlViNGSTON. DIVIDE RS. APPLICATION FILED MAY 27, 1920.
1,398,8'? L I Patented Nov. 29, 1921 INVENTOR. H. L. L win; slm.
UNITED STATES PATENT OFFICE.
ROBERT L. LIVINGSTON, 0F WILLIAMSPORT PENNSYLVANIA.
DIVIDERS.
To (17/ whom it may concern Be it known that 1, ROBERT L. LIVING- S'ION, a citizen of the United States, residing at lVilliamsport, in the county of Lycoming and State of Pennsylvania, have invented certain new and useful Improvements in Dividers: and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
Thi invention relates to quick acting uni-. versal dividers and it consists in the novel features hereinafter described and claimed.
An object of the invention is to provide dividers of the character stated which may be used for quickly and accurately determining the center point of an object or for ascertaining the diameter or transverse dimen sion of an object.
lVith this object in view the divider comprises a block having an opening passing transversely theret-hrough and located at its center. Channels are provided in the block and are disposed parallel with each other and at equal distances at the opposite sides of the center of the block. The said channels are disposed at right angles to the said opening. The channels are connected together at a point between their ends by a recess having arcuate walls. A pinion fits snuglyin the recess and is provided with an opening which registers with the opening in the block. Rack bars are slidably mounted in the channels and are provided at their inner edges with teeth which mesh with the teeth of the pinion. The rack bars may carry at their outer ends points, or arms as desired. A pin is insertible through the opening in the block and the opening in the pinion and means is provided for fixing the pin with relation to the block. Means are provided for preventing the rack bars from disengaging the block.
In the accompaying drawing Figure 1 is a side elevation of the dividers.
Fig. 2 is a top plan view of the same.
Figs. 3 to 7 are detailed views of the features of the invention.
The dividers comprise a block 1 which is circular in plan and which is provided at its upper side with a conical portion 2. An opening 3 passes through the center of the block 1 and through the conical portion 2 thereof. A pin 4 is insertible through the Specification of Letters Patent.
Patented No". 29, 1921 1920. Serial No. 384,641.
opening 3 and may be secured at an adjusted position therein by means of a set screw 5 which isthreaded in the side of the conical portion 2 and which at its inner end engages the side of the pin 4.
The block 1 is provided at its under side with channels 6 which are parallel with relation to each other and disposed at the opposite sides of the opening 3 through the block and at equal distances therefrom. The
channels 6 at a point midway between their ends are connected together by means of a recess 7 which is provided with arcuate walls. A pinion 8 is snugly received in the recess 7 and its teeth project into the channels 6. The pinion 8 is provided at its center with an opening -9 which receives the pin 4 when the pin is applied to the block. Rack bars 10 are provided at their inner sides with teeth 11 and the said rack bars are slidably mounted in the channels 6. The teeth 11 mesh withthe teeth of the pinion 8. The bars 11 are provided at one end with transversely disposed pins 12 which prevent the bars from becoming disconnected from the block 1. The bars 11 may carry at their opposite ends points 13 or arms 14 and these points and arms are provided with set screws 15 which are adapted to engage the end portions of the bars 11 whereby they are held in position thereon. A set screw 16 passes through the side of the block 1 and is engageable with the outer edge of one of the bars 11 whereby the said bars may be held at adjusted positions with relation to the block 1. From the foregoing description it will be seen that a quick acting universal divider and gage is provided. This instrument may be used for finding the center of work to be laid out for machines, also for tool makers, pattern makers, draftsmen, or in any instance where it becomes necessary to work from a center point. It will promptly find or indicate the center between two given points such as a line or lining up from core holes and lugs on castings during the operation of machining the same. It can be used by draftsmen when finding the center of a drawing and avoids the use of scales or dividers which consume time in performing such operation. The point may be substituted by the arm and hence the instrument may be used as calipers to gage theinterior diameter of an object or the exterior diameter or transverse dimension of the same. An advantage had by the instrument is that it promptly determines the center of a piece of work that is not of uniform thickness and width such as lugs on castings and other )arts.
1 Having described the invention What is claimed 1s:
1. An instrument of the class described having relatively slidable gage bars, a block provided with grooves mounting said bars and with a recess intermediate the grooves and communicating therewith, a gear memher in said recess, teeth on the bars in mesh with those of the gear member, and a center point member to directly journal the gear, said center point passing through and beyond the gear and block.
2. An instrument of the class described havin relatively slidable gage-bars, a block rovided with rooves mountin said bars and with a recess intermediate the grooves and communicating therewith, a gear memher in said recess, teeth on the bars in mesh with those of the gear member, and a center (goint member passing through and beyon the gear and block to directly journal the gear, said block having an extension, and means mounted by the extension to secure the center point member in different positions relative to said head.
3. An instrument of the class described having a head, relatively movable gage bars mounted thereby, a gear, teeth on the bars meshing with the gear, acenter point member directly journaled in said gear, and means to secure the center point member in difierent positions relative to said head.
In testimony whereof I affix my signature in presence of two Witnesses.
ROBERT L. LIVINGSTON. Witnesses:
FRED J LIVINGSTON,
WARREN J. DIEFFENDERFER.
US384641A 1920-05-27 1920-05-27 Dividers Expired - Lifetime US1398871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US384641A US1398871A (en) 1920-05-27 1920-05-27 Dividers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US384641A US1398871A (en) 1920-05-27 1920-05-27 Dividers

Publications (1)

Publication Number Publication Date
US1398871A true US1398871A (en) 1921-11-29

Family

ID=23518136

Family Applications (1)

Application Number Title Priority Date Filing Date
US384641A Expired - Lifetime US1398871A (en) 1920-05-27 1920-05-27 Dividers

Country Status (1)

Country Link
US (1) US1398871A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522886A (en) * 1947-04-29 1950-09-19 David D Moore Stencil cutting gauge
US2568559A (en) * 1945-02-24 1951-09-18 George V Nolde Control mechanism for compasses and calipers
US2984013A (en) * 1958-12-05 1961-05-16 Golner Carl Eivin Artur Adjustable limit gages
US4655450A (en) * 1984-08-13 1987-04-07 Rogers Jr Burton L Head gripping apparatus for a neck exercising machine
US6158137A (en) * 1998-11-12 2000-12-12 Bramlett; James E. Center locator tool
US7421797B1 (en) 2007-11-15 2008-09-09 Peter Minegar Cabinet partition positioner
CN103335577A (en) * 2013-05-17 2013-10-02 贾文良 Tyre external diameter measuring device
US20160018222A1 (en) * 2014-07-16 2016-01-21 Michael Oppenheim Device for making collinear equidistant marks
US10458790B2 (en) 2016-12-01 2019-10-29 C&B Products Llc Space determining device and system and method for capturing dimensions and mounting objects

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568559A (en) * 1945-02-24 1951-09-18 George V Nolde Control mechanism for compasses and calipers
US2522886A (en) * 1947-04-29 1950-09-19 David D Moore Stencil cutting gauge
US2984013A (en) * 1958-12-05 1961-05-16 Golner Carl Eivin Artur Adjustable limit gages
US4655450A (en) * 1984-08-13 1987-04-07 Rogers Jr Burton L Head gripping apparatus for a neck exercising machine
US6158137A (en) * 1998-11-12 2000-12-12 Bramlett; James E. Center locator tool
US7421797B1 (en) 2007-11-15 2008-09-09 Peter Minegar Cabinet partition positioner
CN103335577A (en) * 2013-05-17 2013-10-02 贾文良 Tyre external diameter measuring device
CN103335577B (en) * 2013-05-17 2015-09-30 贾文良 Tire outside diameter measurement mechanism
US20160018222A1 (en) * 2014-07-16 2016-01-21 Michael Oppenheim Device for making collinear equidistant marks
US9709393B2 (en) * 2014-07-16 2017-07-18 Michael Oppenheim Device for making collinear equidistant marks
US10458790B2 (en) 2016-12-01 2019-10-29 C&B Products Llc Space determining device and system and method for capturing dimensions and mounting objects

Similar Documents

Publication Publication Date Title
US1398871A (en) Dividers
US2398121A (en) Sine bar
US1721524A (en) Feed-screw limit gauge for lathes
US1321312A (en) Combination-tool
US1274647A (en) Universal center-finder.
US1051531A (en) Eccentric boring-tool holder.
US3325162A (en) Adjustable block
US1394324A (en) Gear-testing machine
US1510285A (en) Calipers
US2405648A (en) Taper hole gauge
US1830009A (en) Adjustable level
US1718089A (en) Offset boring head
US1422746A (en) Keyway locator
US1229069A (en) Protractor.
US1673577A (en) Measuring rule
US1549947A (en) Centering tool and gauge
US1514525A (en) Precision gauge
US1539422A (en) Combination tool
US2673582A (en) Work gauge for use in forming joints in pattern or like sections
US2804787A (en) Centering device for rectangular wave guides
US2460854A (en) Shaft taper gauge
US1828930A (en) Combination square and protractor
US2239229A (en) Calculating device
US1349967A (en) Adjustable cutter
US1325606A (en) Combined bule and square