US99917A - Improvement in sliding square and caliper - Google Patents
Improvement in sliding square and caliper Download PDFInfo
- Publication number
- US99917A US99917A US99917DA US99917A US 99917 A US99917 A US 99917A US 99917D A US99917D A US 99917DA US 99917 A US99917 A US 99917A
- Authority
- US
- United States
- Prior art keywords
- square
- improvement
- caliper
- sliding square
- sliding
- 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
Links
- 238000010276 construction Methods 0.000 description 6
- 235000019687 Lamb Nutrition 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L7/00—Straightedges
- B43L7/10—Plural straightedges relatively movable
- B43L7/14—Square and sliding straight edges
Definitions
- This invention consists in the employment of a spring of' peculiar construction for retaining the movable part of a sliding square in any desired position.
- A represent-s the square proper, which is constructed in the usual well-known manner.
- B represents the movable part consisting of the L- shaped piece l) and socket b', through which latter passes the long arm ot' the square A.
- O represents the spring, which consists cfa base, c, and curving arms c', as shown. rlhe outercnds ofthe base ofthe spring bear upon the square, but by press-v ing its lower ends c c together, these parts are lifted from the square, and the movable part is i'ee to slide thereon.
Landscapes
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
LYSANDER L. LAMisg'or EITGHBURG, MASSAoliUsfrrs.Lv
Letters Patent No. 99,917, dated February 15, 1870.
IMPROVEMENT IN SLIDING- SQUARE AND CALIPER.
The Schedule referred to in these Letters Patent and making part of the same To all whom it fmay concern Be it known that I, LYSANDER L. LAMB, of Fitchburg, in the county of Worcester, and State of Mas.- sachusetts, have invented a new and useful Improvement in Sliding Square and I do hereby declare that the following is a full and exact description of the same, reference bein g had to the accompanyingr drawings and to the letters of reference marked thereon.
This invention consists in the employment of a spring of' peculiar construction for retaining the movable part of a sliding square in any desired position.
In the drawings- Figure 1 is a side elevation of the square complete;
Figure 2, a sideelevation of the movable part detached; and
Figure 3, au end view ofthe same. l
To enable others skilled in the art to which my invent-ion appertains to make and use the same, I will now proceed to describe fully its construction audgoperation.
A represent-s the square proper, which is constructed in the usual well-known manner.
B represents the movable part consisting of the L- shaped piece l) and socket b', through which latter passes the long arm ot' the square A.
O represents the spring, which consists cfa base, c, and curving arms c', as shown. rlhe outercnds ofthe base ofthe spring bear upon the square, but by press-v ing its lower ends c c together, these parts are lifted from the square, and the movable part is i'ee to slide thereon.
The specific construction shown is exceedingly desirable.
rlhe upper curves of the spring are adapted to be easily held by the hand, anda grasp sutliciently strong to move the slide will be strong enough to li'ee thel
Publications (1)
Publication Number | Publication Date |
---|---|
US99917A true US99917A (en) | 1870-02-15 |
Family
ID=2169376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US99917D Expired - Lifetime US99917A (en) | Improvement in sliding square and caliper |
Country Status (1)
Country | Link |
---|---|
US (1) | US99917A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2816362A (en) * | 1956-07-05 | 1957-12-17 | Harry V Daugherty | Scribing apparatus |
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0
- US US99917D patent/US99917A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2816362A (en) * | 1956-07-05 | 1957-12-17 | Harry V Daugherty | Scribing apparatus |
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